Synthesis and pharmacological evaluation of a new class of bicyclic phospholipids, designed as platelet activating factor antagonists
作者:Emerson Poley Peçanha、Carlos Alberto Manssour Fraga、Carlos Maurício Rabello de Sant'Anna、Ana Luisa Palhares de Miranda、Eliezer Jesus Barreiro
DOI:10.1016/s0014-827x(98)00027-5
日期:1998.5
abicyclo[3.3.0]octane)-5-yl-methyl-phosp horyl- ethyl-pyridinium [alkyl chain = methyl (5a) and (5b), allyl (6a) and (6b), n-propyl (7a) and (7b) and n-hexyl (8a) and (8b)] derivatives, structurally designed as conformationally restricted platelet activating factor (PAF) antagonists were synthesized in 12-26% overall yield, using ethyl (+/-)-3-hydroxymethyl-5-(2-oxabicyclo [3.3.0] octane) carboxylate
(+/-)-3-烷氧基甲基-(2-氧杂双环[3.3.0]辛烷)-5-基-甲基磷酰基-乙基-吡啶鎓[烷基链=甲基(5a)和(5b),烯丙基(6a )和(6b)化合物,在结构上被设计为构象受限的血小板活化因子(PAF)拮抗剂,合成了正丙基(7a)和(7b)以及正己基(8a)和(8b)]衍生物,总体合成率为12-26%用(+/-)-3-羟甲基-5-(2-氧杂双环[3.3.0]辛烷)羧酸酯(13a,b)作为关键中间体收率较高。在富含血小板的兔血浆中,在PAF诱导的聚集模型中评估了新衍生物的抗血小板谱。仅化合物8a显示适度的活性。