Tetrahedron

Synthesis, structural revision, and biological activities of 4′-chloroaurone, a metabolite of marine brown alga Spatoglossum variabile

S Venkateswarlu, GK Panchagnula, AL Gottumukkala…

Index: Venkateswarlu, Somepalli; Panchagnula, Gopala K.; Gottumukkala, Aditya L.; Subbaraju, Gottumukkala V. Tetrahedron, 2007 , vol. 63, # 29 p. 6909 - 6914

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Citation Number: 60

Abstract

4′-Chloroaurone (1a), the only aurone reported from a marine source, Spatoglossum variabile was synthesized from 2-hydroxyacetophenone along with six structural analogs. The products obtained were Z-isomers and these were converted into E-isomers by photoisomerization. The E and Z isomers of aurones showed distinct proton and carbon chemical shifts. However, the spectroscopic data of either Z-4′-chloroaurone (1a) or its E ...

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