5-(2,5-difluorophenyl)-6'-fluoro-N-methoxy-N-methyl-3'-(2-nitroethyl)spiro[1,3,4-thiadiazole-2,4'-2,3-dihydrochromene]-3-carboxamide 在
chiralcel OD column 作用下,
以
甲醇 为溶剂,
生成 (3R,4S)-5'-(2,5-difluorophenyl)-6-fluoro-N-methoxy-N-methyl-3-(2-nitroethyl)-3'H-spiro[chromane-4,2'-[1,3,4]thiadiazole]-3'-carboxamide 、 (3S,4S)-5'-(2,5-difluorophenyl)-6-fluoro-N-methoxy-N-methyl-3-(2-nitroethyl)-3'H-spiro[chromane-4,2'-[1,3,4]thiadiazole]-3'-carboxamide 、
(3R,4R)-5'-(2,5-difluorophenyl)-6-fluoro-N-methoxy-N-methyl-3-(2-nitroethyl)-3'H-spiro[chromane-4,2'-[1,3,4]thiadiazole]-3'-carboxamide 、 (3S,4R)-5'-(2,5-difluorophenyl)-6-fluoro-N-methoxy-N-methyl-3-(2-nitroethyl)-3'H-spiro[chromane-4,2'-[1,3,4]thiadiazole]-3'-carboxamide