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US5648484A Catalytic enantioselective synthesis of a spriofused azetidinone 失效
催化对映选择性合成spriofused氮杂环丁酮

Catalytic enantioselective synthesis of a spriofused azetidinone
摘要:
A process for producing a compound of the formula ##STR1## comprises the following sequence of steps: ##STR2## wherein the various radicals are as defined in the specification.
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