(+)-(3aS,4R,7aS)-4-hydroxy-4-(m-tolylethynyl)-octahydro-indole-1-carboxylic acid methyl ester 、
2,3,4-三甲氧基苯甲酸 以to yield (3aR,4S,7aR)-4-m-tolylethynyl-4-(2,3,4-trimethoxy-benzoyloxy)-octahydro-indole-1-carboxylic acid methyl ester的产率得到(3aR,4S,7aR)-4-m-tolylethynyl-4-(2,3,4-trimethoxy-benzoyloxy)-octahydro-indole-1-carboxylic acid methyl ester