Reduction of ketones to epimeric alcohols with potassium hydroxide-diethylene glycol
作者:B.P. Pradhan、A. Hassan、(Miss) T. Ray
DOI:10.1016/s0040-4020(01)96647-5
日期:1985.1
Triterpenoid ketones have been reduced to epimeric alcohols on boiling with potassium hydroxide in diethylene glycol. κ, β -unsaturated ketone furnished saturated epimeric alcohols.
三萜类酮在二甘醇中与氢氧化钾煮沸时已还原为差向异构醇。κ,β-不饱和酮提供饱和差向异构醇。
3,5,7,3′,5′-Pentahydroxyflavan and 3α-methoxyfriedelan from Humboldtia laurifolia
Abstract The leaf, bark and timber extractives of Humboldtialaurifolia were investigated and the following compounds have been isolated: O -acetyloleanolic aldehyde, a sitosteryl ester, lupeol, sitosterol, a fatty acid, 5,7,4′-trihydroxyflavone (apigenin), (2 R ,3 R )-3,5,7,3′,5′-pentahydroxyflavan and 3α-methoxyfriedelan. The latter two compounds are new natural products.
摘要 研究了 Humboldtia laurifolia 的叶、树皮和木材提取物,并分离出了以下化合物:O-乙酰齐墩果醛、一种谷甾醇酯、羽扇豆醇、谷甾醇、一种脂肪酸、5,7,4'-三羟基黄酮(芹菜素), (2 R ,3 R )-3,5,7,3',5'-五羟基黄烷和 3α-甲氧基弗里德聚糖。后两种化合物是新的天然产物。
Cerin and Friedelin. III. A Study of the Oxidative Degradation of Friedelin<sup>1</sup>
作者:Nathan L. Drake、William P. Campbell
DOI:10.1021/ja01300a053
日期:1936.9
ANJANEYULU, V.;RAVI, K.;HARI, BABU B., ACTA CIEN. INDICA. CHEM., 14,(1988) N, C. 115-118
作者:ANJANEYULU, V.、RAVI, K.、HARI, BABU B.
DOI:——
日期:——
Nag; Bose, Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1990, vol. 29, # 2, p. 160 - 162