Synthesis and gastrointestinal pharmacology of a 3E,5Z diene analog of misoprostol
作者:Paul W. Collins、Steven W. Kramer、Alan F. Gasiecki、Richard M. Weier、Peter H. Jones、Gary W. Gullikson、Robert G. Bianchi、Raymond F. Bauer
DOI:10.1021/jm00384a032
日期:1987.1
A stereospecific synthesis and the gastric antisecretory and diarrheal activity of a 3E,5Z diene analogue of misoprostol are described. The key intermediate in the synthesis was an alpha chain truncated acetylene that was obtained by a cuprate/enolate capture procedure on the corresponding cyclopentenone. Palladium-catalyzed coupling of the acetylene with methyl 4-iodo-3(E)-butenoate provided the conjugated
描述了米索前列醇的3E,5Z二烯类似物的立体定向合成以及胃的抗分泌和腹泻活性。合成中的关键中间体是通过相应的环戊烯酮上的铜/烯醇盐捕获程序获得的α链截短的乙炔。乙炔与4-碘-3(E)-丁烯酸甲酯的钯催化偶联提供了共轭烯炔。尽管用Lindlar催化剂对烯炔进行选择性加氢反应失败,但使用P-2镍作为催化剂仍可得到所需的3E,5Z二烯。在抑制狗胃酸分泌以及在大鼠产生腹泻方面,二烯的效力比米索前列醇高约3倍。