申请人:Ayerst McKenna & Harrison Ltd.
公开号:US04054741A1
公开(公告)日:1977-10-18
Process for preparing prostanoic acid derivatives, in particular derivatives of 9,15-dioxygenated prostanoic acid and prost-13-enoic acid, related additionally unsaturated derivatives, homologs thereof and intermediates therefor, in which a lower alkyl ester of 2-(.omega.-carboxy-Y)cyclopent-2-en-1-one in which Y is CH.sub.2 --(a)--(CH.sub.2).sub.m wherein (a) is CH.sub.2 CH.sub.2, CH.dbd.CH or C.tbd.C and m is an integer from 2 - 4 is treated with nitromethane to yield 2-(.omega.-carboxy-Y)-3-nitromethyl-cyclopentan-1-one and the latter compound or its corresponding 1-hydroxy analog are converted to the corresponding aldehyde, 2-(.omega.-carboxy-Y)cyclopentan-1-on-3-al or 1-hydroxy-2-(.omega.-carboxy-Y)cyclopentan-3-al, respectively. Treatment of the aldehyde with the ylid prepared from the appropriate Wittig reagent, preferably a dimethyl 2-oxoalkylphosphonate of the formula (AlkO).sub.2 P(O)CH.sub.2 CO(CH.sub.2).sub.n CH.sub.3 in which n is an integer of from 1-6 and Alk is an alkyl containing from 1 - 3 carbon atoms yields the corresponding derivatives of 2-(.omega.-carboxy-Y)-3-(3-oxoalk-1-enyl)cyclopentan-1-one or -1-o1 in which the oxygen functions may be selectively protected and transformed by conventional means, and in which the unsaturated bonds may be reduced to a single bond. The prostanoic acid derivatives possess prostaglandin like biological activities. Methods for their use are also disclosed.
制备前列腺酸衍生物的过程,特别是9,15-双氧代前列腺酸和前列腺-13-烯酸衍生物的过程,还包括相关的不饱和衍生物、同系物及其中间体。其中,将2-(ω-羧基-Y)环戊-2-烯-1-酮的低碳酸酯处理为亚硝甲烷,得到2-(ω-羧基-Y)-3-硝基甲基环戊-1-酮,然后将该化合物或其相应的1-羟基类似物转化为相应的醛,2-(ω-羧基-Y)环戊-1-酮-3-醛或1-羟基-2-(ω-羧基-Y)环戊-3-醛。将醛与由适当的威蒂格试剂制备的叶立得到的叶立体处理,最好是公式(AlkO)2P(O)CH2CO(CH2)nCH3的二甲基2-氧代烷基膦酸酯,其中n是1-6的整数,Alk是含有1-3个碳原子的烷基,产生对应的2-(ω-羧基-Y)-3-(3-氧代烷-1-烯基)环戊-1-酮或-1-醇,在这些化合物中,氧功能基可能通过常规手段选择性地保护和转化,不饱和键可能被还原为单键。前列腺酸衍生物具有类似前列腺素的生物活性。同时还公开了它们的使用方法。