A process for the synthesis of 6-alpha-(aminomethyl-) penicilianic acid and its derivatives which proceeds stereospecifically from 6-alpha-bromopenicillanate-1,1-dioxide esters, via the corresponding 6-aipha-bromomagnesium Grignard reagent and the 6-alpha(benzyloxycarbonylaminomethyl) derivative. This synthesis is of particular value in the preparation of diastereomeric R- and S-1-(ethoxycarbonyl- oxy-lethyl-6-alpha-(aminomethyl-)penicillanate-1,1-dioxide.
一种合成 6-α-(
氨基甲基)青霉烷酸及其衍
生物的工艺,该工艺以 6-α-
溴青霉烷酸-1,1-二氧化物酯为原料,通过相应的 6-aipha-
溴镁格氏试剂和 6-α(苄氧羰基
氨基甲基)衍
生物进行立体定向合成。这种合成方法对于制备非对映的 R-和 S-1-(乙氧基羰基-氧-乙基-6-α-(
氨甲基)青霉烷酸酯-1,1-二氧化物具有特殊价值。