Two new diterpenoids, forskolin G and H were isolated from the chloroform extract of the roots of Coleus forskohlii, and based on spectroscopic data, their structures were identified as 1a-hydroxy-6b,7b-diacetoxy-8,13...Two new diterpenoids, forskolin G and H were isolated from the chloroform extract of the roots of Coleus forskohlii, and based on spectroscopic data, their structures were identified as 1a-hydroxy-6b,7b-diacetoxy-8,13-epoxylabd-14-ene-11-one (1), and 1a,6b-diacetoxy-8,13-epoxy labd-14-ene-11-one (2), respectively.展开更多
Two new diterpenoid quinones, colean S and T were isolated from the chloroform extract of the leaves of Coleus forskohlii, and based on spectroscopic data, their structures were identified as 1,4-phananthrenedione-4b,...Two new diterpenoid quinones, colean S and T were isolated from the chloroform extract of the leaves of Coleus forskohlii, and based on spectroscopic data, their structures were identified as 1,4-phananthrenedione-4b,5,6,8a,9,10-hexahydro-3,9 beta ,10 alpha- tri-hydroxy-4b,7,8-trimethyl-2-propylene(2), respectively.展开更多
Isoforskolin (ISOF) was isolated from Coleus forskohlii native to Yunnan in China. It is identified as one analog of diterpene forskolin (FSK) which comes from the Indian plant Coleus forskohlii. Researches found that...Isoforskolin (ISOF) was isolated from Coleus forskohlii native to Yunnan in China. It is identified as one analog of diterpene forskolin (FSK) which comes from the Indian plant Coleus forskohlii. Researches found that the Yunnan native plant Coleus forskohlii contained rich ISOF but not FSK. ISOF was reported to activate adenylyl cyclase (AC) isoforms. The ophthalmologic and cardiovascular effects of ISOF were firstly reported in the 1990s. The researchers in Kunming, China, found ISOF could lower blood pressure and intraocular pressure. Recent researches found the respiratory tract effects of ISOF, and showed that ISOF significantly elevated cyclic adenosine monophosphate (cAMP) levels in rat lung homogenate, and relaxed the histamine-induced contraction of isolated guinea pig trachea and lung smooth muscle, isoforskolin pretreatment attenuates acute lung injury induced by lipopolysaccharide (LPS) in several models, lowered LPS-induced secretion of the inflammatory cytokine in human monocytes.展开更多
in order to investigate the active substances of Coleus forskohlii（Wiiid.） Brlq., a new labdane dlterpenold, 12- hydroxy-8,13E-labdadlen-15.olc acid, together with two 8,13-epoxylabd-14-ene-11-one dlterpenolds, 6-ac...in order to investigate the active substances of Coleus forskohlii（Wiiid.） Brlq., a new labdane dlterpenold, 12- hydroxy-8,13E-labdadlen-15.olc acid, together with two 8,13-epoxylabd-14-ene-11-one dlterpenolds, 6-acetyl-1- deoxyforskolln and 6-acetyl-1,9-dldeoxyforskolln, was Isolated on the basis of various chromatographic technlques and spectroscopic methods.展开更多
基金The project is supported by the Applied Basic Research Foundation of Yunnan Province (1999C0081M).
文摘Two new diterpenoids, forskolin G and H were isolated from the chloroform extract of the roots of Coleus forskohlii, and based on spectroscopic data, their structures were identified as 1a-hydroxy-6b,7b-diacetoxy-8,13-epoxylabd-14-ene-11-one (1), and 1a,6b-diacetoxy-8,13-epoxy labd-14-ene-11-one (2), respectively.
基金Project supported by the Applied Basic Research Foundation of Yunnan Province (1999C0081M). Authors would like to thank the staf
文摘Two new diterpenoid quinones, colean S and T were isolated from the chloroform extract of the leaves of Coleus forskohlii, and based on spectroscopic data, their structures were identified as 1,4-phananthrenedione-4b,5,6,8a,9,10-hexahydro-3,9 beta ,10 alpha- tri-hydroxy-4b,7,8-trimethyl-2-propylene(2), respectively.
文摘Isoforskolin (ISOF) was isolated from Coleus forskohlii native to Yunnan in China. It is identified as one analog of diterpene forskolin (FSK) which comes from the Indian plant Coleus forskohlii. Researches found that the Yunnan native plant Coleus forskohlii contained rich ISOF but not FSK. ISOF was reported to activate adenylyl cyclase (AC) isoforms. The ophthalmologic and cardiovascular effects of ISOF were firstly reported in the 1990s. The researchers in Kunming, China, found ISOF could lower blood pressure and intraocular pressure. Recent researches found the respiratory tract effects of ISOF, and showed that ISOF significantly elevated cyclic adenosine monophosphate (cAMP) levels in rat lung homogenate, and relaxed the histamine-induced contraction of isolated guinea pig trachea and lung smooth muscle, isoforskolin pretreatment attenuates acute lung injury induced by lipopolysaccharide (LPS) in several models, lowered LPS-induced secretion of the inflammatory cytokine in human monocytes.
文摘in order to investigate the active substances of Coleus forskohlii（Wiiid.） Brlq., a new labdane dlterpenold, 12- hydroxy-8,13E-labdadlen-15.olc acid, together with two 8,13-epoxylabd-14-ene-11-one dlterpenolds, 6-acetyl-1- deoxyforskolln and 6-acetyl-1,9-dldeoxyforskolln, was Isolated on the basis of various chromatographic technlques and spectroscopic methods.
