1. A compound represented by the following formula (1) or a salt thereof:
wherein
R1 represents a C1-12 alkyl group which may be substituted with one or more substituents selected from the group consisting of a halogen atom, a lower alkoxyl group, and a phenyl group which may be substituted with one or more halogen atoms or a group represented by the following formula (1-1):
wherein a is an integer from 0 to 5 and R6 represents at least one substituent selected from the group consisting of a halogen atom, a lower alkyl group, a lower alkoxyl group, a lower alkylthio group, nitro group, a lower alkoxycarbonyl group, cyano group, trifluoromethyl group, trifluoromethoxy group, or a phenyloxy group, which may be the same or different, or represents a substituent selected from the group consisting of 1-naphthyl group, 2-naphthyl group, 5-indanyl group, 5,6,7,8-tetrahydronaphthalen-2-yl group, allyl group, 3-butenyl group, and 2-propynyl group,
R2 represents a C2-12 alkyl group which may be substituted with one or more substituents selected from the group consisting of a lower alkoxyl group, an aryloxy group, an aralkyloxy group, a lower alkylthio group, an arylthio group, an aralkylthio group, and a phenyl group, wherein R2 may be further substituted with one or more halogen atoms provided that R2, except for the methylene group in R2 that binds to the nitrogen atom, may be substituted with one or more halogen atoms,
b is an integer from 0 to 4 and R3 is at least one substituent selected from the group consisting of a halogen atom, a lower alkyl group, or a lower alkoxyl group, which may be the same or different,
R4 represents a lower alkyl group,
R5 represents hydrogen atom or a lower alkyl group,
n is an integer from 2 to 4, and
X represents \u2014NH\u2014 or \u2014O\u2014.
2. The compound according to claim 1 or the salt thereof, wherein R1 represents a C1-12 alkyl group which may be substituted with one or more substituents selected from the group consisting of a halogen atom, a lower alkoxyl group, and a phenyl group which may be substituted with one or more halogen atoms.
3. The compound according to claim 1 or the salt thereof, wherein R2 represents a C2-12 alkyl group which may be substituted with one or more substituents selected from the group consisting of a lower alkoxyl group and a lower alkylthio group.
4. The compound according to claim 1 or the salt thereof, wherein b is 0.
5. The compound according to claim 1 or the salt thereof, wherein R4 represents methyl group, ethyl group or isopropyl group.
6. The compound according to claim 1 or the salt thereof, wherein R5 represents hydrogen atom or ethyl group.
7. The compound according to claim 1 or the salt thereof, wherein n is 2 or 3.
8. The compound according to claim 1 or the salt thereof, wherein X represents \u2014O\u2014.
9. The compound according to claim 1 or 2 or the salt thereof, wherein R2 represents a C2-12 alkyl group which may be substituted with one or more substituents selected from the group consisting of a lower alkoxyl group, an aryloxy group, an aralkyloxy group, and a phenyl group, wherein R2 may be further substituted with one or more halogen atoms provided that R2, except for the methylene group in R2 that binds to the nitrogen atom, may be substituted with one or more halogen atoms, b is 0, R4 represents ethyl group, R5 represents hydrogen atom or ethyl group, n represents 2, and X represents \u2014O\u2014.
10. The compound according to claim 1 or the salt thereof, wherein R1 represents a group represented by the formula (1-1) wherein a is an integer from 0 to 5, R6 represents fluorine, R2 represents an alkyl group selected from the group consisting of normal pentyl group, normal hexyl group, normal heptyl group, and normal octyl group, b is 0, R4 represents ethyl group, R5 represents hydrogen atom or ethyl group, n is 2, and X represents \u2014NH\u2014.
11. The compound according to claim 1 or the salt thereof, wherein R1 represents a substituent selected from the group consisting of methyl group, ethyl group, benzyl group, allyl group, propyl group, p-tolyl group, 4-bromophenyl group, 4-fluorophenyl group, 2-methoxyethyl group, isopropyl group, 2-propynyl group, 2-naphthyl group, isobutyl group, 2,2-dimethylpropyl group, and 3-butenyl group, R2 represents heptyl group, b is 0, R4 represents ethyl group, R5 represents hydrogen atom or ethyl group, n is 2, and X represents \u2014O\u2014.
12. A compound or a salt thereof, which is selected from the group consisting of (R)-3-(4-{2-3-(2,4-difluorophenyl)-1-heptylureidoethoxy}phenyl)-2-ethoxypropionic acid, (R)-3-(4-{2-3-(2,4-difluorophenyl)-1-heptylureidoethoxy}phenyl)-2-ethoxypropionic acid ethyl ester, (S)-3-(4-{2-3-(2,4-difluorophenyl)-1-heptylureidoethoxy}phenyl)-2-ethoxypropionic acid, (S)-3-(4-{2-3-(2,4-difluorophenyl)-1-heptylureidoethoxy}phenyl)-2-ethoxypropionic acid ethyl ester, 3-(4-{2-3-(2,4-difluorophenyl)-1-heptylureidoethoxy}phenyl)-2-ethoxypropionic acid and 3-(4-{2-3-(2,4-difluorophenyl)-1-heptylureidoethoxy}phenyl)-2-ethoxypropionic acid ethyl ester.
13. A compound or a salt thereof, which is selected from the group consisting of 2-ethoxy-3-(4-{2-heptyl(isopropyloxycarbonyl)aminoethoxy}phenyl)propionic acid, 2-ethoxy-3-(4-{2-heptyl(isopropyloxycarbonyl)aminoethoxy}phenyl)propionic acid ethyl ester, (R)-2-ethoxy-3-(4-{2-heptyl(isopropyloxycarbonyl)aminoethoxy}phenyl)propionic acid, (R)-2-ethoxy-3-(4-{2-heptyl(isopropyloxycarbonyl)aminoethoxy}phenyl)propionic acid ethyl ester, (S)-2-ethoxy-3-(4-{2-heptyl(isopropyloxycarbonyl)aminoethoxy}phenyl)propionic acid and (S)-2-ethoxy-3-(4-{2-heptyl(isopropyloxycarbonyl)aminoethoxy}phenyl)propionic acid ethyl ester.
14. A compound or a salt thereof, which is selected from the group consisting of 3-(4-{2-benzyloxycarbonyl(heptyl)aminoethoxy}phenyl)-2-ethoxypropionic acid, 3-(4-{2-benzyloxycarbonyl(heptyl)aminoethoxy}phenyl)-2-ethoxypropionic acid ethyl ester, (R)-3-(4-{2-benzyloxycarbonyl(heptyl)aminoethoxy}phenyl)-2-ethoxypropionic acid, (R)-3-(4-{2-benzyloxycarbonyl(heptyl)aminoethoxy}phenyl)-2-ethoxypropionic acid ethyl ester, (S)-3-(4-{2-benzyloxycarbonyl(heptyl)aminoethoxy}phenyl)-2-ethoxypropionic acid and (S)-3-(4-{2-benzyloxycarbonyl(heptyl)aminoethoxy}phenyl)-2-ethoxypropionic acid ethyl ester.
15. A compound or a salt thereof, which is selected from the group consisting of (R)-2-ethoxy-3-{4-2-(N-heptyl-N-methoxycarbonylamino)ethoxyphenyl}propionic acid, (R)-2-ethoxy-3-{4-2-(N-heptyl-N-methoxycarbonylamino)ethoxyphenyl}propionic acid ethyl ester, (S)-2-ethoxy-3-{4-2-(N-heptyl-N-methoxycarbonylamino)ethoxyphenyl}propionic acid, (S)-2-ethoxy-3-{4-2-(N-heptyl-N-methoxycarbonylamino)ethoxyphenyl}propionic acid ethyl ester, 2-ethoxy-3-{4-2-(N-heptyl-N-methoxycarbonylamino)ethoxyphenyl}propionic acid and 2-ethoxy-3-{4-2-(N-heptyl-N-methoxycarbonylamino)ethoxyphenyl}propionic acid ethyl ester.
16. A pharmaceutical composition comprising the compound according to claim 1 or a pharmaceutically acceptable salt thereof as an active ingredient.
17. The pharmaceutical composition according to claim 16, which is a hypoglycemic agent andor triglyceride reducing agent andor total cholesterol reducing agent.
18. The pharmaceutical composition according to claim 16, which is used for prophylactic andor therapeutic treatment of diabetes mellitus andor hyperlipidemia.
19. A method for preparing the compound represented by the formula (1) or the salt thereof according to claim 1, which comprises the step of reacting a compound represented by the following formula (3):
wherein
R21 represents a C1-11 alkyl group which may be substituted with one or more substituents selected from the group consisting of a lower alkoxyl group, an aryloxy group, an aralkyloxy group, a lower alkylthio group, an arylthio group, an aralkylthio group, and a phenyl group, wherein R21 may be further substituted with one or more halogen atoms, b is an integer from 0 to 4, R3 is at least one substituent selected from the group consisting of a halogen atom, a lower alkyl group, or a lower alkoxyl group, which may be the same or different, R4 represents a lower alkyl group, R51 represents a protective group of the carboxyl group, and n is an integer from 2 to 4, with a compound represented by the following formula (4):
R1\u2014Y\u2003\u2003(4)
wherein R1 represents a C1-12 alkyl group which may be substituted with one or more substituents selected from the group consisting of a halogen atom, a lower alkoxyl group, and a phenyl group which may be substituted with one or more halogen atoms, or represents a group represented by the following formula (1-1):
wherein a is an integer from 0 to 5, R6 is at least one substituent selected from the group consisting of a halogen atom, a lower alkyl group, a lower alkoxyl group, a lower alkylthio group, nitro group, a lower alkoxycarbonyl group, cyano group, trifluoromethyl group, trifluoromethoxy group, or a phenyloxy group, which may be the same or different, or represents a substituent selected from the group consisting of 1-naphthyl group, 2-naphthyl group, 5-indanyl group, 5,6,7,8-tetrahydronaphthalen-2-yl group, allyl group, 3-butenyl group, and 2-propynyl group, and Y represents
\u2014NCO or \u2014OCOW where W represents a leaving group, to prepare a compound represented by the following formula (2):
wherein R1, R3, b, R4, R51, and n are the same as those defined above, and R2 represents a C2-12 alkyl group which may be substituted with one or more substituents selected from the group consisting of a lower alkoxyl group, an aryloxy group, an aralkyloxy group, a lower alkylthio group, an arylthio group, an aralkylthio group, and a phenyl group, wherein R2 may be further substituted with one or more halogen atoms provided that R2, except for the methylene group in R2 that binds to the nitrogen atom, may be substituted with one or more halogen atoms, and removing the protective group R51, if necessary.
20. The method according to claim 19, wherein the protective group R51 is at least one selected from the group consisting of lower alkyl group, phenyl group, trityl group, benzyl group, 2-tetrahydropyranyl group, 2-tetrahydrofuranyl group, triethylsilyl group, dimethylphenylsilyl group, tert-butyldimethylsilyl group, or allyl group.
21. The pharmaceutical composition according to claim 16, which is a hypoglycemic agent andor triglyceride reducing agent.
22. The method according to claim 19, wherein R51 is a lower alkyl group and Y represents \u2014NCO or \u2014OCOCl.
23. A method of treating a disease comprising administering an effective amount of the pharmaceutical composition according to claim 16 to a mammal, wherein said disease is characterized by being responsive to a hypoglycemic agent, a triglyceride reducing agent or a total cholesterol reducing agent.
24. A method of treating a disease comprising administering an effective amount of the pharmaceutical composition according to claim 16 to a mammal, wherein said disease is diabetes mellitus or hyperlipidemia.
25. A compound represented by the following formula (1) or a salt thereof:
wherein
R1 represents a C1-12 alkyl group which may be substituted with one or more substituents selected from the group consisting of a halogen atom, a lower alkoxyl group, and a phenyl group which may be substituted with one or more halogen atoms or a group represented by the following formula (1-1):
wherein a is an integer from 0 to 5 and R6 represents a substituent selected from the group consisting of a halogen atom, a lower alkyl group, a lower alkoxyl group, a lower alkylthio group, nitro group, a lower alkoxycarbonyl group, cyano group, trifluoromethyl group, trifluoromethoxy group, and a phenyloxy group, which may be the same or different, or represents a substituent selected from the group consisting of 1-naphthyl group, 2-naphthyl group, 5-indanyl group, 5,6,7,8-tetrahydronaphthalen-2-yl group, allyl group, 3-butenyl group, and 2-propynyl group,
R2 represents a C2-12 alkyl group which may be substituted with a substituent selected from the group consisting of a lower alkoxyl group, an aryloxy group, an aralkyloxy group, a lower alkylthio group, an arylthio group, an aralkylthio group, and a phenyl group, wherein R2 may be further substituted with one or more halogen atoms,
b is an integer from 0 to 4 and R3 is a substituent selected from the group consisting of a halogen atom, a lower alkyl group, and a lower alkoxyl group, which may be the same or different,
R4 represents a lower alkyl group,
R5 represents hydrogen atom or a lower alkyl group,
n represents an integer from 2 to 4,
X represents \u2014NH\u2014 or \u2014O\u2014, and
* represents an asymmetric carbon.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A sensor comprising:
a sensor body comprising an elastic material; and
an emitter and a detector disposed on the sensor body, wherein the sensor body has a single substantially inelastic portion extending only between the emitter and the detector.
2. The sensor, as set forth in claim 1, wherein the sensor comprises at least one of a pulse oximetry sensor, a sensor configured to measure a water fraction, or a sensor configured to measure water compartmentalization.
3. The sensor, as set forth in claim 1, wherein the sensor comprises at least one of a carboxyhemoglobin sensor, a hematocrit sensor, or a methemoglobin sensor.
4. The sensor, as set forth in claim 1, wherein the sensor comprises at least one of a blood constituent sensor, or a tissue constituent sensor.
5. The sensor, as set forth in claim 1, wherein the emitter comprises at least one light emitting diode.
6. The sensor, as set forth in claim 1, wherein the detector comprises at least one photodetector.
7. The sensor, as set forth in claim 1, wherein the elastic material comprises a uniaxially elastic material.
8. The sensor, as set forth in claim 7, wherein the uniaxially elastic material is elastic along an imaginary axis connecting the emitter and the detector.
9. The sensor, as set forth in claim 1, wherein the elastic material comprises a woven material.
10. The sensor, as set forth in claim 1, wherein the sensor comprises a stiffening member adapted to hold the emitter and the detector at a substantially fixed optical distance.
11. The sensor, as set forth in claim 10, wherein the stiffening member comprises a gel, liquid, gas, or foam.
12. The sensor, as set forth in claim 10, wherein the stiffening member comprises a metal or a rigid polymeric material.
13. The sensor, as set forth in claim 1, wherein the sensor body comprises at least one panel of elastic material.
14. The sensor, as set forth in claim 1, wherein at least 10% of the sensor body comprises the elastic material.
15. The sensor, as set forth in claim 1, wherein the sensor comprises a reflectance-type sensor.
16. The sensor, as set forth in claim 1, wherein the sensor comprises a transmission-type sensor.
17. A system comprising:
a monitor; and
a sensor adapted to be operatively coupled to the monitor, the
sensor comprising:
a sensor body comprising an elastic material, wherein a portion of the elastic material corresponds to a top of a digit joint; and
an emitter and a detector disposed on the sensor body, wherein sensor body has a single substantially inelastic portion extending only between the emitter and the detector.
18. The system, as set forth in claim 17, wherein the sensor comprises at least one of a pulse oximetry sensor or a sensor for measuring a water fraction.
19. The system, as set forth in claim 17, wherein the sensor comprises at least one of a blood constituent sensor or a tissue constituent sensor.
20. The system, as set forth in claim 17, wherein the sensor comprises at least one of a carboxyhemoglobin sensor or a methemoglobin sensor.
21. The system, as set forth in claim 17, wherein the emitter comprises at least one light emitting diode.
22. The system, as set forth in claim 17, wherein the detector comprises at least one photodetector.
23. The system, as set forth in claim 17, wherein the elastic material comprises a uniaxially elastic material.
24. The system, as set forth in claim 23, wherein the uniaxially elastic material is elastic along an imaginary axis connecting the emitter and the detector.
25. The system, as set forth in claim 17, wherein the elastic material comprises a woven material.
26. The system, as set forth in claim 17, wherein the sensor comprises a stiffening member adapted to hold the emitter and the detector at a substantially fixed optical distance.
27. The system, as set forth in claim 26, wherein the stiffening member comprises a gel, liquid, gas, or foam.
28. The system, as set forth in claim 26, wherein the stiffening member comprises a metal or a rigid polymeric material.
29. The system, as set forth in claim 17, wherein the sensor body comprises at least one panel of elastic material.
30. The system, as set forth in claim 17, wherein at least 10% of the sensor body comprises the elastic material.
31. The system, as set forth in claim 17, wherein the sensor comprises a reflectance-type sensor.
32. The system, as set forth in claim 17, wherein the sensor comprises a transmission-type sensor.
33. A method of response to movement of a sensor comprising:
applying a sensor body comprising an emitter and a detector to a patient’s tissue; and
stretching an elastic material of the sensor body in response to a movement of the tissue, wherein the optical distance between the emitter and the detector remains substantially fixed by a single substantially inelastic portion of the sensor body spanning only between the emitter and the detector.
34. The method, as set forth in claim 33, comprising stretching the elastic portion along a single axis.
35. The method, as set forth in claim 34, wherein the single axis comprises an imaginary axis connecting the emitter and the detector.
36. The method, as set forth in claim 33, comprising fixing the optical distance between the emitter and the detector with a stiffening member.
37. A method of manufacturing a sensor, comprising:
providing a sensor body comprising an elastic material; and
providing an emitter and a detector disposed on the sensor body, wherein the sensor body has a single substantially inelastic portion extending only between the emitter and the detector.
38. The method, as set forth in claim 37, wherein the elastic material comprises a uniaxially elastic material.
39. The method, as set forth in claim 38, wherein the uniaxially elastic material is elastic along an imaginary axis connecting the emitter and the detector.
40. The method, as set forth in claim 37, wherein the elastic material comprises a woven material.
41. The method, as set forth in claim 37, comprising:
providing a stiffening member adapted to hold the emitter and the detector at a substantially fixed optical distance.
42. The method, as set forth in claim 37, wherein the sensor body comprises at least one panel of elastic material.
43. The method, as set forth in claim 37, wherein at least 10% of the sensor body comprises the elastic material.
44. A sensor comprising:
a sensor body comprising an elastic material adapted to expand in response to a biasing force, wherein a portion of the elastic material corresponds to a top of a digit joint; and
an emitter and a detector disposed on the sensor body, wherein the sensor body has a single substantially inelastic portion spanning only between the emitter and detector adapted to fix the optical distance between the emitter and the detector.
45. The sensor, as set forth in claim 44, wherein the sensor comprises at least one of a pulse oximetry sensor or a sensor for measuring a water fraction.
46. The sensor, as set forth in claim 44, wherein the emitter comprises at least one light emitting diode.
47. The sensor, as set forth in claim 44, wherein the sensor is adapted to expand at least 20% in length along imaginary axis connecting the emitter and the detector.