Chemical Studies on Crude Drug Processing. VIII. On the Constituents of Rehmanniae Radix. (2): Absolute Stereostructures of Rehmaglutin C and Glutinoside Isolated from Chinese Rehmanniae Radix, the Dried Root of Rehmannia glutinosa Libosch.
摘要:
本文全面介绍了一种鸢尾内酯--地黄苷 C 和一种氯化三环鸢尾苷--谷苷的结构阐释。Rehmaglutin C(10)和 glutinoside(11)是从中国地黄中分离出来的。10 和 11 的绝对立体结构是根据化学和物理化学证据确定的,其中包括烯丙基苯甲酰基衍生物的激发子手性方法。
Absolute stereostructures of rehmaglutin C and glutinoside a new iridoid lactone and a new chlorinated iridoid glucoside from Chinese Rehmanniae Radix.
A new iridoid lactone, rehmaglutin C (4__∼), and a new chlorinated iridoid glucoside, glutinoside (5__∼), were isolated from Chinese Rehmanniae Radix, the dried root of Rehmannia glutinosa L(ibosch)___=. [Kan-jio (in Japanese) from China]. Their absolute stereostructures were determined on the basis of chemical and physicochemical evidence and by use of the exciton chirality method for allylic benzoyl derivatives.