Bioactive Compounds with Added Value Prepared from Terpenes Contained in Solid Wastes from the Olive Oil Industry
作者:Andres Parra、Pilar E. Lopez、Andres Garcia-Granados
DOI:10.1002/cbdv.200900023
日期:2010.2
pentacyclic triterpenes oleanolic acid and maslinic acid were isolated. These natural compounds were transformed into methyl olean‐12‐en‐28‐oate (5), which then was transformed into several seco‐C‐ring triterpene compounds by chemical and photolytic modifications. The triene seco‐products were fragmented through several oxidative procedures to produce, simultaneously, cis‐ and trans‐decalin derivatives, both
作者:M. Cortés、V. Armstrong、M. E. Reyes、J. López、E. Madariaga
DOI:10.1080/00397919608003554
日期:1996.5
(-)-Drimenol(2) was used as starting material for the synthesis of diastereoisomeric diols 3 and 4, through the nitrile 7, Compounds 3 and 4 are the direct precursors of Ambrox(R) (1) and 9-epiambrox(2).
Elimination of C-8-functional groups from driman-8α,11-diol-11-monoacetate and-diacetate
作者:K. I. Kuchkova、A. N. Aryku、A. N. Barba、P. F. Vlad
DOI:10.1007/s10600-007-0151-9
日期:2007.7
The dehydration products of driman-8α,11-diol-11-monoacetate that are formed upon reaction with several dehydrating agents and the products from elimination of the C-8 acetoxy group in driman-8α,11-diol diacetate were investigated in detail. A new effective synthesis of drimenylacetate from driman-8α, 11-diol-11-monoacetate by its regioselective dehydration using methanesulfonic acid trimethylsilyl ether was developed.
Iodine, a Mild Reagent for the Aromatization of Terpenoids
作者:Victoriano Domingo、Consuelo Prieto、Lucia Silva、Jesús M. L. Rodilla、José F. Quílez del Moral、Alejandro F. Barrero
DOI:10.1021/acs.jnatprod.5b00914
日期:2016.4.22
Efficient procedures based on the use of iodine for the aromatization of a series of terpenoids possessing diene and homoallylic or allylic alcohol functionalities are described. Different examples are reported as a proof-of-concept study. Furthermore, iodine also proved to mediate the dehydrogenation of testosterone.
Despite the general success of metal catalysts in modern organic chemistry, the exploration of natural available organic molecules as catalysts still has a strong appeal to scientists because of their green and sustainable advantages. Herein an intermolecular coupling reaction of cyclobutanone oximes with olefins promoted by biowaste gallic acid is reported. Both alkylation and carbonylative alkylation