乙酸酐 、 Benzoic acid (1R,2S,4S,5S)-5-(N'-benzyl-guanidino)-4-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-5-ethyl-2-hydroxy-2-methyl-cyclohexyl ester; hydrochloride 、
原甲酸三甲酯 在
三乙胺 、
三氟乙酸 作用下,
生成
Benzoic acid (4S,4aS,6S,7R,8aS)-3-benzyl-2-diacetylamino-8a-ethyl-6-hydroxy-4-methoxy-6-methyl-3,4,4a,5,6,7,8,8a-octahydro-quinazolin-7-yl ester 、 Benzoic acid (4R,4aS,6S,7R,8aS)-3-benzyl-2-diacetylamino-8a-ethyl-6-hydroxy-4-methoxy-6-methyl-3,4,4a,5,6,7,8,8a-octahydro-quinazolin-7-yl ester 、 Benzoic acid (4S,4aS,6S,7R,8aS)-3-acetyl-2-(acetyl-benzyl-amino)-8a-ethyl-6-hydroxy-4-methoxy-6-methyl-3,4,4a,5,6,7,8,8a-octahydro-quinazolin-7-yl ester 、 Benzoic acid (4R,4aS,6S,7R,8aS)-3-acetyl-2-(acetyl-benzyl-amino)-8a-ethyl-6-hydroxy-4-methoxy-6-methyl-3,4,4a,5,6,7,8,8a-octahydro-quinazolin-7-yl ester