CRYSTAL OF CYCLOPROPENONE COMPOUND

摘要

PROBLEM TO BE SOLVED: To provide a new stable crystal of (2S)-N-ä(1S)-1-[(S)-hydroxy(3-oxo-2-phenyl-1-cyclopropen-1-yl)methyl]-2-methylpropyl}-2-benzenesulfonylamino-4-methylpentanamide nonhydrate. SOLUTION: A new A-type crystal and a new B-type crystal of the (2S)-N-ä(1S)-1-[(S)-hydroxy(3-oxo-2-phenyl-1-cyclopropen-1-yl)methyl]-2-methylpropyl}-2-benzenesulfonylamino-4-methylpentanamide nonhydrate are found as a result of advancing the study as the crystal of the compound. COPYRIGHT: (C)2007,JPO&INPIT