%A JIN Qi- Duan,HE Bi - He %T Minor Constituents from Coleus forskohlii %0 Journal Article %D 1998 %J Plant Diversity %R %P 1-3 %V 20 %N 04 %U {https://journal.kib.ac.cn/CN/abstract/article_31055.shtml} %8 1998-08-25 %X Two new labdanoids, forskolin E and F, with forskolin A, B, C and D, have been isolated from the chloroform extract of the whole plants of Coleus forskohlii. The chemical structures of the two minor constituents have been established as lα, 7β- diacetoxy- 8,13 epoxy- 6β- hydroxylabd- 14- en- 11 - one(l) and 7β-acetoxy- 8,13 - epoxy- 6β,9a- dihydroxylabd - 14- en- 11 - one(2), respectively, on the basis of detailed spectroscopic analysis and all assignments were supported by 1H -1H COSY, HMBC and HMOC spectrum (see table 1).