[EN] METHODS AND COMPOSITIONS FOR TERPENOID SYNTHESIS<br/>[FR] PROCÉDÉS ET COMPOSITIONS POUR LA SYNTHÈSE DE TERPÉNOÏDES
申请人:UNIV FLORIDA
公开号:WO2018053322A1
公开(公告)日:2018-03-22
In one aspect, the disclosure relates to methods for preparation of terpene and terpene-like molecules. In a further aspect, the disclosure relates to the products of the disclosed methods, i.e., terpene and terpene-like molecules prepared using the disclosed methods. Intermediates for the synthesis of a wide variety of terpenoids are γ-allyl Knoevenagel adducts or quasi γ-allyl Knoevenagel adducts are disclosed. In various aspects, methods of preparing terpenoids through these intermediates are disclosed. The methods can comprise α-alkylation of an allylic electrophile followed by ring-closure metathesis to a polycyclic terpenoid structure. In a further aspect, the disclosure pertains to terpenoid frameworks, and compounds prepared via disclosed oxidation and substitution reactions on the disclosed terpenoid frameworks. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.
Total syntheses of the labdane diterpene lactones marrubiin, marrulibacetal, desertine, marrulibacetal A, marrubasch F, cyllenine C, marrulanic acid, and marrulactone are described. The trans-decalin moiety of these molecules was constructed in a stereoselective manner by a Pauson-Khand reaction, and the resultant cyclopentenone was oxidatively cleaved for formation of the lactone ring. Elongation
The Vasorelaxant Activity of Marrubenol and Marrubiin from <i>Marrubium vulgare</i>
作者:Sanae El Bardai、Nicole Morel、Maurice Wibo、Nicolas Fabre、Gabriel Llabres、Badiaa Lyoussi、Joëlle Quetin-Leclercq
DOI:10.1055/s-2003-37042
日期:——
Crude extracts of the aerial parts of Marrubium vulgare show a potent in vitro inhibition of KCl-induced contraction of rat aorta. Bio-guided fractionations, spectroscopic analysis and chemical derivatization revealed the furanic labdane diterpenes marrubenol and marrubiin as the most active compounds.
It is an object of the present invention to introduce carboxylic acid-functionalities suitable for coupling into the denatonium structure by means of simple synthesis, namely the synthesis of bitter principle derivatives based on the denatonium structure according to formula
1
:
For example, according to the invention, lidocaine derivatives may be reacted with carboxylated benzyl halogenides. The carboxylated denatonium derivatives of the present invention are especially applied in medicine, biology, medical engineering as well as cosmetics, the pharmaceutical, chemical, and foodstuff industry.
A non-aqueous absorbent comprising a crosslinked polymer which contains a structural unit having a carboxyl group and/or a sulfonate group in an amount of 20 to 100% weight in its molecule and in which from 30 to 100% by mol of the protons in the carboxyl group and/or the sulfonate group have been substituted by onium cations; a non-aqueous gel made of this non-aqueous absorbent and an organic solvent; and a non-aqueous absorbent sheet and a non-aqueous absorbent agent containing the non-aqueous absorbent. Because of having excellent capabilities of absorbing and holding various organic solvents such as alcohols and gelating, these materials are usable for various purposes, for example, lithium batteries, alcohol-based bactericidal materials or alcohol-based bactericides, cold insulating materials or cold insulators, gel sheets for cooling, fuel compositions for solid fuels or solid fuels using the same, fragrance materials or fragrances, patch materials or patches, insecticidal compositions or insecticides, fuel stores for fuel batteries or fuel batteries using the same.