Helvetica chimica acta

Synthesis of the Bretonins, Polyolefinic Esterified Glyceryl Ethers of an Unidentified Sponge from the North??Brittany Sea: Absolute Configuration and Novel Structure …

I Mancini, G Guella, F Pietra

Index: Mancini, Ines; Guella, Graziano; Pietra, Francesco Helvetica Chimica Acta, 1991 , vol. 74, # 5 p. 941 - 950

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Citation Number: 13

Abstract

Abstract The absolute configurations of acetylated bretonin A (=(+}-(R)-1-[(acetoxy) methyl]-2- {[(4E, 6E, 8E)-dodeca-4, 6, 8-trienyl] oxy} ethyl 4-acetoxybenzoate;(−)-1b) and isobretonin A (=(+)-(S)-3-{[(4E, 6E, 8E)-do-deca-4, 6, 8-trienyl] oxy}-2-hydroxypropyl 4- hydroxybenzoate;(+)-2), previously isolated from an undetermined sponge of the North Brittany sea, were established by comparison with synthetic (+)-lb and (+)-2, obtained from ...