Azetidinone derivative and process for preparing the same
申请人:SAGAMI CHEMICAL RESEARCH CENTER
公开号:EP0224059B1
公开(公告)日:1992-04-15
US5081238A
申请人:——
公开号:US5081238A
公开(公告)日:1992-01-14
.beta.methyl azetidinone derivatives and stereoselective process for
申请人:Sagami Chemical Research Center
公开号:US05081238A1
公开(公告)日:1992-01-14
An azetidinone derivative having the general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are hydrogen atom or a protective group and R.sup.3 is an alkyl group or hydrogen atom, a process for preparing the same, and a process for preparing an azetidinone derivative having the general formula (II): ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are as above. The azetidinone derivative (I) of the present invention can be converted into an important intermediate of 1.beta.-methylcarbapenem antibiotics of a selective reduction of the double bond.