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Scientific article
English

Sulfur-containing polybromoindoles from the red alga Laurencia brongniartii

Published inTetrahedron, vol. 45, no. 23, p. 7301-7310
Publication date1989
Abstract

Six new polybromoindoles (9-14) have been isolated from the red alga Laurencia brongniartii. Two were optically active sulfoxides, the itomanindoles A (12) and B (13) and one was a bisindole (14). The structures of 12 and 14 were elucidated by X-ray analysis. The sulfoxides 12 and 13 were readily converted with diazomethane to the corresponding N-methyl derivatives. Treatment with acetic anhydride at room temperature gave the same indolenine (24) as the major product. Indoles 9-14 were isolated from Laurencia brongniartii. Structures of 12 and 14 were elucidated by X-ray.

Citation (ISO format)
TANAKA, Jun’ichi et al. Sulfur-containing polybromoindoles from the red alga Laurencia brongniartii. In: Tetrahedron, 1989, vol. 45, n° 23, p. 7301–7310. doi: 10.1016/S0040-4020(01)89191-2
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ISSN of the journal0040-4020
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