发明授权
US5245027A 3-fluorosulfonyloxyceph-3-em compounds 失效
3-FLUOROSULFONYLOXYCEPH-3-EM化合物

3-fluorosulfonyloxyceph-3-em compounds
摘要:
3-Fluorosulfonyloxyceph-3-ems having a protected amino or acylamino group in the 7-position are subject to carbon-carbon bond formation at the 3-position by means of a palladium catalyzed coupling reaction with substituted organostannanes. A process for preparing cefprozil is disclosed.
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