The Mechanism and Crystal Structure of 2-Methoxy-2-methyl-4-phenyl-3,4,4a,10b-tetrahydro-2H,5H-pyrano[3,2-c]chromen-5-one.Acetal of Warfarin Acid

摘要

Acetal of warfarin acid has been synthesized via a hemi acetal intermediate and structurally characterized by X-ray diffraction.The crystal structure shows that the title compound was formed by the hydrolysis of warfarin acid in methanol at pH 3,with space group P2_1 and unit cell parameters a = 5.859 (17),b =16.745 (5),c = 16.402 (5) A,alpha = 90.00;beta = 94.853 (4),and gamma = 90.00°.