Capsazepine

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Capsazepine
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Names
IUPAC name
N-[2-(4-Chlorophenyl)ethyl]-1,3,4,5-

tetrahydro-7,8-dihydroxy-2H-2-

benzazepine-2-carbothioamide
Identifiers
138977-28-3 YesY
ChEMBL ChEMBL391997 YesY
ChemSpider 2015280 YesY
2461
Jmol 3D model Interactive image
PubChem 2733484
UNII LFW48MY844 YesY
  • InChI=1S/C19H21ClN2O2S/c20-16-5-3-13(4-6-16)7-8-21-19(25)22-9-1-2-14-10-17(23)18(24)11-15(14)12-22/h3-6,10-11,23-24H,1-2,7-9,12H2,(H,21,25) YesY
    Key: DRCMAZOSEIMCHM-UHFFFAOYSA-N YesY
  • InChI=1/C19H21ClN2O2S/c20-16-5-3-13(4-6-16)7-8-21-19(25)22-9-1-2-14-10-17(23)18(24)11-15(14)12-22/h3-6,10-11,23-24H,1-2,7-9,12H2,(H,21,25)
    Key: DRCMAZOSEIMCHM-UHFFFAOYAH
  • Clc1ccc(cc1)CCNC(=S)N3Cc2c(cc(O)c(O)c2)CCC3
Properties
C19H21ClN2O2S
Molar mass 376.9 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
YesY verify (what is YesYN ?)
Infobox references

Capsazepine is a synthetic analogue of capsaicin.

Pharmacology

Capsazepine blocks the painful sensation of heat caused by capsaicin (the active ingredient of chilli pepper) which activates the TRPV1 ion channel. It is therefore considered to be a capsaicin antagonist. The TRPV1 channel functions as a pain and temperature sensor in mammalians. Capsazepine blocks only the activation of TRPV1 channels by chemicals but not by other painful stimuli, like heat. Depending on the pharmacological assay the half maximal inhibitory concentration IC50 is in the nanomolar to low micromolar range. In addition to its effects on TRPV1 channels it was also shown to inhibit the cold activated TRPM8 channel,[1] voltage-activated calcium channels[2] and nicotinic acetylcholine receptors.[3] It mainly serves as a tool to study the TRPV1 ion channel.[4]

Development

Capsazepine was discovered by a research group at the Sandoz Institute for Medical Research. Its synthesis and chemical properties were published in 1994. It was found by modification of the chemical backbone of capsaicin.[5]

Recent Developments

By incorporation of an azobenzene unit, a photoswitchable version of capsazepine (AC4) was developed in 2013 that allows for optical control of TRPV1 channels with light.[6]

See also

External links

References

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