Chemical transformation of ∆9(15)-africanene and their antibacterial activity
作者:S. Rajaram、A. Vijender Reddy、P. Krishnaiah、K. Ravinder、K. Chinni Mahesh、K. Hara Kishore、U. S. N. Murty、Y. Venkateswarlu
DOI:10.1007/s00044-013-0635-z
日期:2014.1
Africanene, a medicinally important natural sesquiterpenoid has been subjected to chemicaltransformations to prepare aromatic, hetero aromatic, and aliphatic esters. The synthesized compounds were characterized using IR, mass, and NMR spectrometric analysis. The compounds were evaluated for their antibacterialactivities. Graphical Abstract
racemic totalsynthesis of the sesquiterpenoid unit of the hybrid marine natural product polymaxenolide has been achieved based on a three-component assembly followed by ring-closing metathesis as the key steps. However, the spectral data of our product synthesized from Δ9(15)-africanene by epoxidation were not identical with those of the natural product named epoxyafricanane. The structure confirmation
Practical total syntheses of africane-type sesquiterpenoids were realized by reexamination of a divergent strategy employing optimized three-component coupling followed by ring-closing metathesis and substrate-controlled cyclopropanation. This sequential eight-step conversion provided Δ9(15)-africanene, a common bicyclo[5.3.0]decane intermediate for the syntheses of africane derivatives, in more than