Pyrrolidine compounds and medicinal utilization thereof
申请人:Mitsubishi Pharma Corporation
公开号:US06468998B1
公开(公告)日:2002-10-22
The present invention provides a pyrrolidine compound of the formula (I)
wherein each symbol is as defined in the specification, an optically active compound thereof and a pharmaceutically acceptable salt thereof. The present invention further provides a pharmaceutical composition containing a compound of the formula (I), an optically active compound thereof, or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable additive. The compound of the present invention has a serotonin 2 receptor antagonistic action along with a platelet aggregation suppressive action, a peripheral circulation improving action and a lacrimation promoting action. Therefore, the compound of the present invention can be a useful medicine showing effect against thrombotic embolism, dry eye and the like.
Synthesis and biological evaluation of pyrrolidine-based T-type calcium channel inhibitors for the treatment of neuropathic pain
作者:Hak Kyun Yang、Woo Seung Son、Keon Seung Lim、Gun Hee Kim、Eun Jeong Lim、Changdev G. Gadhe、Jae Yeol Lee、Kyu-Sung Jeong、Sang Min Lim、Ae Nim Pae
DOI:10.1080/14756366.2018.1513926
日期:2018.1.1
T-type channel inhibitors showed promising in vivo efficacy in neuropathic pain animal models and are being investigated in clinical trials. Herein we report development of novel pyrrolidine-based T-type calcium channel inhibitors by pharmacophore mapping and structural hybridisation followed by evaluation of their Cav3.1 and Cav3.2 channel inhibitory activities. Among potent inhibitors against both
block with the tetracyclic A/B/C/D ring system, a concise enantioselective totalsynthesis of (−)-cephalotaxine starting from readily available homopiperonyl alcohol has been achieved in nine steps with only two column chromatography purifications. Following the tactical introduction of the Meinwald rearrangement, enantioselective divergent syntheses of (−)-cephalotine B with an additional C3–O–C11
2,6-diazaspiro[3.4]octan-7-one derivatives as potent sigma-1 receptor antagonists that enhanced the antinociceptive effect of morphine and rescued morphine tolerance
antagonists harboring the 2,6-diazaspiro[3.4]octan-7-one scaffold. Through a detailed structure-activity relationship study, we identified compound 32 as a potent σ1R antagonist, which significantly enhanced the antinociceptive effect of morphine and rescued morphine-induced analgesic tolerance. Our results support σ1R antagonism as a promising strategy to develop novel analgesics and highlight the therapeutic
Chemoselective Three‐Component Geminal Cross Couplings of Dihaloalkanes with Cr Catalysis: Rapid Access to Tertiary and Quaternary Alkanes via a Metal–Carbene Intermediate
The three-component geminal couplings have been achieved by design of a chromium catalytic system using dihaloalkanes to selective react with organomagnesium and chlorosilanes/alkyl tosylates. These newly developed reactions are effective for rapidly forming tertiary and quaternary alkanes via a Cr carbene intermediate with a novel inner-sphere radical coupling mechanism, showing great potential in