ethyl 3,4-O-isopropylidene-5-O-methanesulfonyl quinate

右旋奎宁酸

2,2-二甲氧基丙烷

(1S,3R,4S,5R)-3,4-O-isopropylidene-1,5-quinic lactone

(1S,2R)-2-(acetylamino)-1-(tert-butoxycarbonylamino)-4-cyclohexen-3-one