申请人:BRISTOL-MYERS SQUIBB COMPANY
公开号:EP0736533A1
公开(公告)日:1996-10-09
(1R,trans) Diprotected 3-methylene-1,2-cyclopropanedimethanol is oxidized to an optically active diol intermediate which is then cyclized to an orthoester intermediate, and then converted to the (2S-trans)diprotected 2,3-bis(hydroxymethyl)cyclobutanone. This cyclobutanone is useful as an intermediate in the preparation of the antiviral agent [1R-(1α,2β,3α)]-2-amino-9-[2,3-bis(hydroxymethyl)cyclobutyl]-1,9-dihydro-6H-purin-6-one.
(1R,反式)二保护的 3-亚甲基-1,2-环丙烷二甲醇被氧化成光学活性二元醇中间体,然后环化成正辛酯中间体,再转化成(2S-反式)二保护的 2,3-双(羟甲基)环丁酮。这种环丁酮是制备抗病毒剂[1R-(1α,2β,3α)]-2-氨基-9-[2,3-双(羟甲基)环丁基]-1,9-二氢-6H-嘌呤-6-酮的中间体。