申请人:Miles Laboratories, Inc.
公开号:US04065493A1
公开(公告)日:1977-12-27
Depentyl analogues of prostaglandins A, E, and F having no C-16 to C-20 carbon atoms. The analogues correspond to the formula ##STR1## wherein: L is methylene, ethylene, or trimethylene; K is ethylene or cis-vinylene; M is carbonyl, .alpha.-hydroxymethylene, or .beta.-hydroxymethylene; N is methylene or methine, provided that N is methine only if P is methine and M is carbonyl; P is methylene, ethylene, .alpha.-hydroxymethylene or methine, provided that P is methine only if N is methine; and, R is carboxyl; hydroxymethylene, alkoxycarbonyl, the alkyl portion of said alkoxycarbonyl being a lower alkyl, or a pharmacologically acceptable non-toxic carboxy salt. The analogues are prepared by first converting a trans-1-iodo-3-alkoxy-1-propene to the corresponding lithio compound. This lithio compound then combines with the hexamethylphosphorous triamide complex of copper (I) pentyne to give an alkenylcopper species. Reacting this alkenylcopper compound with the appropriate 2-substituted-cyclopent-2-enone or 2-substituted-cyclohex-2-enone gives the desired depentyl prostaglandins.
Depentyl类前列腺素A、E和F的类似物没有C-16到C-20碳原子。该类类似物对应于以下式子:##STR1## 其中:L为亚甲基、乙烯或三亚甲基;K为乙烯或顺式乙烯基;M为羰基、α-羟甲基或β-羟甲基;N为亚甲基或亚胺基,但仅当P为亚胺基且M为羰基时,N为亚胺基;P为亚甲基、乙烯、α-羟甲基或亚胺基,但仅当N为亚胺基时,P为亚胺基;R为羧基、羟甲基、烷氧羰基,所述烷氧羰基的烷基部分为低级烷基,或药理学上可接受的无毒羧酸盐。该类类似物的制备方法是首先将反式-1-碘-3-烷氧基-1-丙烯转化为相应的锂化合物。然后,该锂化合物与铜(I)戊炔的六甲基膦三胺络合物结合,形成烯丙基铜物种。将该烯丙基铜化合物与适当的2-取代环戊-2-酮或2-取代环己-2-酮反应,即可得到所需的Depentyl前列腺素。