Conversion of the spirosolane-type glycoside, esculeoside A, a major component contained in the ripe tomato Lycopersicon esculentum fruits, into a solanocapsine-type sapogenol, esculeogenin B-2, (5α,22S,23R,25S)-22,26-epimino-16β,23-epoxy-3β,23,27-trihydroxycholestane, and esculeogenin B-1, (5α,22R,23S,25S)-22,26-epimino-16β,23-epoxy-3β,23,27-trihydroxycholestane, which are rare naturally occurring compounds was attained by acid hydrolysis with 2 N HCl in dioxane and water (1 : 1).
将螺旋烷型苷、
番茄苷A(成熟番茄Lycopersicon esculentum果实的主要成分)转化为茄碱型
皂苷元、
番茄苷元B-2(5α,22S,23R,25S)-22,26-表亚
氨基-16β,23-环氧-3β,23,27-三羟基胆甾烷和
番茄苷元B-1(5α,22R,23S,25S)-22,26-表亚
氨基-16β,23-环氧-3β,23,27-三羟基胆甾烷,这两种化合物是罕见的天然化合物,通过在
二氧六环和
水(1:1)中用2
N HCl进行酸
水解而获得。