Azetidinone derivatives and processes for production thereof
申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04845210A1
公开(公告)日:1989-07-04
The invention relates to a method of producing an azetidinone derivative of the formula: ##STR1## which comprises reacting a compound of the formula ##STR2## with a compound of the formula ##STR3## and then subjecting the resulting compound to hydrolysis, the substituents above being as defined in the specification.
.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.