Synthesis of malyngolide, an antibiotic from the marine blue-green alga Lyngbya majuscula Gomont

G Cardillo, M Orena, G Porzi…

Index: Cardillo, Giuliana; Orena, Mario; Porzi, Gianni; Sandri, Sergio Journal of Organic Chemistry, 1981 , vol. 46, # 12 p. 2439 - 2442

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Citation Number: 28

Abstract

Malyngolide (1) was synthetized, starting from the condensation of dianion 2, obtained by metalation with lithium diisopropylamide of the sodium salt of tiglic acid, and decanal. Successive esterification of 3a and oxidation with Jones reagent of 4a afforded 5 in very good yield. Olefination of 5 with methylenemagnesium iodide gave 6, which was converted to the corresponding iodolactone 7. Hydrolysis of 7 to 1 was accomplished by Hg (C104) 2 ...

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Novel synthesis of. alpha.-hydroxy ketones and. gamma.-or. delta.-keto esters from cyclic iodo carbonates and iodo lactones

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