19865-96-4Relevant academic research and scientific papers
The Reaction of Lupane and Friedo-Oleanane Type Triterpenes with m-Chloroperbenzoic Acid
Tori, Motoo,Matsuda, Reiko,Sono, Masakazu,Kohama, Yoshihiro,Asakawa, Yoshinori
, p. 2103 - 2108 (1988)
Lupane-3β,28-diol, lupan-3β-ol, and friedelan-3β-ol were treated with m-chloroperbenzoic acid (mCPBA) in refluxing chloroform to afford corresponding lactones in one step, while lupane-3β,28-diyl, diacetate, lupan-3β-yl acetate, and friedelan-3β-yl acetate to give hydroxylated or keto derivatives.Similar reaction of dendropanoxide with mCPBA yielded 6β-, 7β-, 21α-, and 22β-hydroxylated compounds.
OXIDATION OF UNACTIVATED CARBON ATOMS OF LUPANE AND FRIEDELANE-TYPE TRITERPENES WITH m-CHLOROPERBENZOIC ACID
Tori, Motoo,Matsuda, Reiko,Asakawa, Yoshinori
, p. 167 - 170 (1985)
The reaction of lupan-3β,28-diyl diacetate, lupan-3β-yl acetate, and friedelan-3β-yl acetate with m-chloroperbenzoic acid gave their hydroxy or keto derivatives upon oxidation of unactivated carbon atoms.
STRUCTURES OF KOKZEYLANOL AND KOKZEYLANONOL
Gunatilaka, Leslei A. A.,Nanayakkara, Dhammika, N. P.,Sultanbawa, Uvais, M.
, p. 1425 - 1428 (2007/10/02)
Kokzeylanol and kokzeylanonol obtained from Kokoona zeylanica have been shown to be 6β,27-dihydroxy-D:A-friedo-olean-3-one (1) and 6β,27-dihydroxy-D:A-friedo-oleana-3,21-dione (2), respectively by the deoxygenation of their 27-acetoxy derivatives using Lithium-ethylene diamine reduction coupled with spectroscopic and irradiation methods.Kokzeylanonol represents the first tetraoxygenated C:A-friedo-oleanoane isolated from a natural source.
