Synthesis and Serotonin 2 (5-HT2) Receptor Antagonist Activity of 5-Aminoalkyl-Substituted Pyrrolo[3,2-c]azepines and Related Compounds.
作者:Akira MIZUNO、Atsto OGATA、Tomoe KAMEI、Makoto SHIBATA、Tetsuo SHIMAMOTO、Yasuhiro HAYASHI、Kyoko NAKANISHI、Chikako TAKIGUCHI、Naomi OKA、Norio INOMATA
DOI:10.1248/cpb.48.623
日期:——
2-c]azepine derivatives was synthesized and their serotonin 2 (5-HT2) receptor antagonist and antiplatelet aggregation activities were evaluated. 5-HT2 receptor antagonist activity was largely determined by the nature of the substituent at the 8-position as well as the aminoalkyl group at the 5-position of the pyrrolo[3,2-c]azepine ring. Compound 18a, 5-[3-[4-(4-fluorophenyl)piperazin-1-yl]propyl]-8-hydroxy-1-methyl-
合成了一系列的5-氨基烷基吡咯并[3,2-c]氮杂环庚烷衍生物,并评估了它们的5-羟色胺2(5-HT2)受体拮抗剂和抗血小板聚集活性。5-HT 2受体拮抗剂的活性在很大程度上取决于吡咯并[3,2-c] a庚环的8位上的取代基以及5位上的氨基烷基。化合物18a,5- [3- [4-(4-氟苯基)哌嗪-1-基]丙基] -8-羟基-1-甲基-1,4,5,6,7,8-六氢吡咯并[3,2 -c] azepin-4-one被认为具有强大的5-HT2受体拮抗活性,但具有弱的α1肾上腺素受体阻断活性,且无明显的D2受体结合亲和力,而相应的异构体吡咯并[3,4-c] azepine衍生物(22 )仅显示弱的5-HT2受体拮抗剂活性。外消旋体18a通过非对映异构体盐的形成直接拆分后,可以精确评估每种对映体。发现18a的5-HT2受体拮抗剂活性主要存在于(-)-18a中(在分离的豚鼠动脉中,其效力比(+)-