申请人:E. R. Squibb & Sons, Inc.
公开号:US05084581A1
公开(公告)日:1992-01-28
Disclosed herein is a novel process in which novel aldehydes ##STR1## and the trans isomer thereof are hydrolyzed by treatment with an alkali metal carbonate, bicarbonate or hydroxide and water to form the cis enantiomer ##STR2## Also disclosed is a process for preparing [1S-[1.alpha., 2.alpha.(Z), 3.alpha., 4.alpha.]]-7-[3[[[[(1-oxoheptyl)amino]acetyl]-amino ]methyl-7-oxabicyclo-[2.2.1]hept-2-yl]-5-heptenoic acid using the above process.
本文披露了一种新颖的过程,其中新颖的醛类化合物##STR1##及其顺式异构体通过与碱金属碳酸盐、碳酸氢盐或氢氧化物以及水处理水解,形成顺式对映体##STR2##。还披露了一种利用上述过程制备[1S-[1.alpha., 2.alpha.(Z), 3.alpha., 4.alpha.]]-7-[3[[[[(1-oxoheptyl)amino]acetyl]-amino ]methyl-7-oxabicyclo-[2.2.1]hept-2-yl]-5-heptenoic acid的过程。