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Molecules 1997, 2(1), 3-6; doi:10.3390/jan97p2
Article

Synthesis of the Demospongic Compounds, (6Z, 11Z)-Octadecadienoic Acid and (6Z, 11Z)-Eicosadienoic Acid

, * ,  and
Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai - 400 085, India
* Author to whom correspondence should be addressed.
Received: 20 December 1996 / Accepted: 10 January 1997 / Published: 29 January 1997
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Abstract

A stereoselective synthesis of (6Z, 11Z)-octadecadienoic acid (1) and (6Z, 11Z)-eicosadienoic acid (2) from easily accessible pentane-1,5-diol (3) is described. Thus, compound 3 on pyranylation and oxidation gave the aldehyde 5 which was converted to the acid 7 by Wittig reaction with a suitable phosphorane. Its depyranylation and oxidation furnished the key aldehyde 9 which upon Wittig reaction with n-heptylidene and n-nonylidene phosphoranes, respectively followed by alkaline hydrolysis afforded the title acids.
Keywords: Euryspongia rosea; phospholipid fatty acids; stereoselective synthesis; (6Z; 11Z)-octadecadienoic acids; (6Z; 11Z)-eicosadienoic acids; Wittig olefination Euryspongia rosea; phospholipid fatty acids; stereoselective synthesis; (6Z; 11Z)-octadecadienoic acids; (6Z; 11Z)-eicosadienoic acids; Wittig olefination
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Kulkarni, B.A.; Chattopadhyay, S.; Chattopadhyay, A.; Mamdapur, V.R. Synthesis of the Demospongic Compounds, (6Z, 11Z)-Octadecadienoic Acid and (6Z, 11Z)-Eicosadienoic Acid. Molecules 1997, 2, 3-6.

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