910228-56-7Relevant academic research and scientific papers
Total synthesis of (-)-bitungolide F and determination of its absolute stereochemistry
Ghosh, Subhash,Kumar, Soma Uday,Shashidhar
, p. 1582 - 1585 (2008/09/17)
(Chemical Equation Presented) A highly convergent total synthesis of bitungolide F leading to the assignment of its absolute stereochemistry is described. The key steps include a Horner-Wadsworth-Emmons olefination to construct the C7-C8 bond, a Wittig reaction to introduce the conjugate E,E-olefinic moiety in the molecule, and finally a ring-closing metathesis reaction to construct the six-membered α,β-unsaturated δ-lactone of the molecule. Modified Evans's syn-aldol reaction, using Crimmins's protocol, was used to install the stereochemistries at the C4 and C5 centers. The stereochemistry at C9 was introduced by means of hydroxy-directed reduction of the C9 keto using Evans's protocol.
Biomimetic synthesis of marine sponge metabolite spiculoic acid A and establishment of the absolute configuration of the natural product
Kirkham, James E. D.,Lee, Victor,Baldwin, Jack E.
, p. 2863 - 2865 (2008/09/18)
The synthesis of spiculoic acid A (1) using a biomimetic Diels-Alder reaction is described; comparison of the specific rotation of the natural and synthetic material revealed that the enantiomer of the natural product has been synthesized. The Royal Socie
