申请人:The Regents of the University of California
公开号:US03948958A1
公开(公告)日:1976-04-06
3-Prenyl-substituted-2-alkyl menaquinones are made by reacting an alkali metal salt of a 3-alkyl-4-alkoxy or aralkoxy-1-naphthol with a prenyl halide, and oxidizing the resulting 2-prenyl-3-alkyl-4-alkoxy or aralkoxy-1-naphthol to the corresponding 3-prenyl-substituted-2-alkyl menaquinone. There is also disclosed a procedure for making the alkali metal salts involving the preparation of an ether-ester and hydrogenolysis.
3-前醇基取代的2-烷基维生素K2是通过将3-烷基-4-烷氧基或芳基烷氧基-1-萘酚的碱金属盐与前醇卤代物反应,并将生成的2-前醇基-3-烷基-4-烷氧基或芳基烷氧基-1-萘酚氧化成相应的3-前醇基取代的2-烷基维生素K2来制备的。还公开了一种制备碱金属盐的方法,涉及醚酯的制备和氢解反应。