PROCESS FOR PREPARING PYROLIDINE DERIVATIVE AND SALT THEREOF, INITIAL PRODUCT AND PROCESS FOR PREPARATION THEREOF

摘要

FIELD: medicine. SUBSTANCE: claimed invention describes process for preparation of compound of formula:wherein Ris heterocyclyl (lower) alkyl; Ris acyl and Ris carboxy (lower) alkyl or substituted carboxy (lower) alkyl, which is useful as drug or salt of said compound. EFFECT: improved properties of the claimed compound.