3790-78-1Relevant articles and documents
Method for efficiently preparing enol through selective hydrogenation of alkynol
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Paragraph 0062-0071, (2021/03/24)
The invention provides a method for efficiently preparing enol through selective hydrogenation of alkynol. A conventional tank reactor and a micro-channel reactor are combined for use, and the micro-channel reactor can be used for quickly preparing an enol product after immobilizing a rare earth metal doped catalyst, so that the reaction time is shortened, and the production efficiency is improved. And a phosphine compound is added as a side reaction inhibitor to improve the selectivity.
Stereochemical investigations on the biosynthesis of achiral (Z)-γ-bisabolene in Cryptosporangium arvum
Rinkel, Jan,Dickschat, Jeroen S.
supporting information, p. 789 - 794 (2019/04/17)
A newly identified bacterial (Z)-γ-bisabolene synthase was used for investigating the cyclisation mechanism of the sesquiterpene. Since the stereoinformation of both chiral putative intermediates, nerolidyl diphosphate (NPP) and the bisabolyl cation, is lost during formation of the achiral product, the intriguing question of their absolute configurations was addressed by incubating both enantiomers of NPP with the recombinant enzyme, which resolved in an exclusive cyclisation of (R)-NPP, while (S)-NPP that is non-natural to the (Z)-γ-bisabolene synthase was specifically converted into (E)-β-farnesene. A hypothetical enzyme mechanistic model that explains these observations is presented.
Isotope sensitive branching and kinetic isotope effects to analyse multiproduct terpenoid synthases from Zea mays
Gatto, Nathalie,Vattekkatte, Abith,K?llner, Tobias,Degenhardt, J?rg,Gershenzon, Jonathan,Boland, Wilhelm
supporting information, p. 3797 - 3800 (2015/03/30)
Multiproduct terpene synthases TPS4-B73 and TPS5-Delprim from Zea mays exhibit isotopically sensitive branching in the formation of mono- and sesquiterpene volatiles. The impact of the kinetic isotope effects and the stabilization of the reactive intermediates by hyperconjugation along with the shift of products from alkenes to alcohols are discussed.