Cascade Metathesis Reactions for the Synthesis of Taxane and Isotaxane Derivatives - Archive ouverte HAL Access content directly
Journal Articles Chemistry - A European Journal Year : 2016

Cascade Metathesis Reactions for the Synthesis of Taxane and Isotaxane Derivatives

(1) , (2) , (1) , (2) , (1) , (2) , (3) , (2)
1
2
3

Abstract

Tricyclic isotaxane and taxane derivatives have been synthesized by a very efficient cascade ring-closing dienyne metathesis (RCDEYM) reaction, which formed the A and B rings in one operation. When the alkyne is present at C13 (with no neighboring gem-dimethyl group), the RCEDYM reaction leads to 14,15-isotaxanes 16a,b and 18b with the gem-dimethyl group on the A ring. If the alkyne is at the C11 position (and thus flanked by a gem-dimethyl group), RCEDYM reaction only proceeds in the presence of a trisubstituted olefin at C13, which disfavors the competing diene ring-closing metathesis reaction, to give the tricyclic core of Taxol 44.

Dates and versions

hal-01355946 , version 1 (24-08-2016)

Identifiers

Cite

Cong Ma, Aurélien Letort, Rémi Aouzal, Antonia Wilkes, Gourhari Maiti, et al.. Cascade Metathesis Reactions for the Synthesis of Taxane and Isotaxane Derivatives. Chemistry - A European Journal, 2016, 22 (20), pp.6891-6898. ⟨10.1002/chem.201600592⟩. ⟨hal-01355946⟩
127 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More