9-hydroxy-7-(3-methyl-2-octyl)-1,4,4-trimethyl-1,2,3,4-tetrahydrocyclopenta[ c][1]benzopyran 、
4-哌啶-1-丁酸盐酸盐 以to form 7-(3-methyl-2-octyl)-9[4-(piperidino)-butyryloxy]-1,4,4-trimethyl-1,2,3,4-tetrahydrocyclopenta[ c][1]benzopyran hydrochloride的产率得到7-(3-methyl-2-octyl)-9-[4-(piperidino)-butyryloxy]-1,4,4-trimethyl-1,2,3,4-tetrahydrocyclopenta[ c][1]benzopyran hydrochloride