Phytochemistry p. 257 - 260 (1990)
Update date:2022-09-26
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Conserva, Lucia M.
Sobral Da Silva, Marcelo
Filho, Raimundo Braz
The investigation of a specimen of Aristolochia birostris afforded, in adition to β-sitosterol, seven lignoids: rel-(8R)-Δ8'-3,4-methylenedioxy-5,3',5'-trimethoxy, rel-(8R)-Δ8'-3,4-methylenedioxy-3',5'-dimethoxy-, rel-(8R)-Δ8'-3,3',4,5,5'-pentamethoxy- and rel-(7R,8R)-Δ8'-3,4-methylenedioxy-3,5,5'-trimethoxy-7-hydroxy-8.0.4'-neolignan; rel-(8R,8'R)-3,4;3',4'-dimethylenedioxy-9-oxo-, rel(8R,8'R)-3,4;3',4'-dimethylenedioxy-9β-hydroxy- and rel-(8R,8'R)-3,4;3',4'-dimethylenedioxy-9α-hydroxy-8.8',9.0.9'-lignan and rel-(7S,8S,7'R,8'R)-3,3',4,4',5,5'-hexamethoxy-7.0.7',8,8'-lignan.The structures were elucidated by spectroscopic anaysis.
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