C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/335.5
C07D 205/08 (2006.01) C07F 7/10 (2006.01) C07F 7/18 (2006.01)
Patent
CA 1327045
Abstract of the Disclosure An azetidinone derivative having the general formula (I): Image (I) wherein R1 and R2 are hydrogen atom or a protective group and R3 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): Image (II) wherein R1, R2 and R3 are as above. The azetidinone derivative (I) of the present invention can be converted into an important intermediate of 1.beta.-methylcarbapenem antibiotics by a selective reduction of the double bond.
521244
Iimori Takamasa
Shibasaki Masakatsu
Osler Hoskin & Harcourt Llp
Sagami Chemical Research Center
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