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作者从玄参科植物地黄(Rchmannia glutinosavar.hueichingensis)的新鲜根中分离得到11个已知的和2个新的环烯醚萜。新鲜的地黄根切成薄片,用甲醇提取,浓缩至1/40后用正己烷脱脂,经强离子HP20交换树脂柱,先后用水、甲醇洗脱,分别得到部分1和2。部分1经活性炭柱,用水洗脱,除去糖,继之用甲醇洗脱,得到一个糖甙部分,在水和正丁醇间划分.其水层经MC1硅胶CHP20P柱层折,然后
The authors isolated 11 known and 2 new iridoids from the fresh roots of the plant Scrophulariaceae (Rchmannia glutinosavar. Hueichingensis). Fresh Radix Rehmanniae Root is cut into thin slices, extracted with methanol, concentrated to 1/40, and then defatted with n-hexane, and then passed through a strong ion HP20 exchange resin column, followed by elution with water and methanol to obtain fractions 1 and 2, respectively. Fraction 1 was eluted with water and eluted with water to remove sugar, followed by elution with methanol to give a glycosyl fraction, which was partitioned between water and n-butanol. The aqueous layer was folded through the MC1 silica gel CHP20P column layer, and then