Chemical constituents from the stem of Brosimum potabile (Moraceae)

Acta Amazonica

Viviane Gomes Da Costa Abreu²  Marilda Conceição Da Silva¹  Rozângela Manfrini Magalhães¹  Dorila Piló-veloso¹  Izelene Felício Da Silva Xavier¹  Patrícia Machado Oliveira¹  Antônio Flávio De Carvalho Alcântra¹ 

[1] ,ICEx Departamento de Química Belo Horizonte MG

关键词: Brosimum potabile;    coumarins;    pentacyclic triterpenes;    structural characterization by NMR and GC/MS;    Brosimum potabile;    cumarinas;    triterpenos pentacíclicos;    caracterização estrutural por RMN e CG/EM;   

DOI  :  10.1590/S0044-59672010000400011

来源: SciELO

【 摘 要 】

Three coumarins, 5-methoxypsoralene, xanthyletin, and (-)-marmesin, have been isolated from the ethanolic extract of the stem of the Amazonian plant Brosimum potabile. The structures were determined on the basis of NMR analyses and by comparison with spectroscopic data in the literature. The analysis of the hexane fractions by GC-MS in EIMS mode suggested the presence of (1-methylpentyl)-benzene; α,α-dimethyl-4-(1-methylethyl)-benzenemethanol; 1-methyl-3,5-bis(1-methylethyl)-benzene; urs-12-ene; chola-5,22-dien-3β-ol; cholesta-4,6-dien-3β-ol; sitosteryl 9(Z)-octadecenoate; cholesta-5,22-dien-3β-ol; cholesta-4,6,22-trien-3-one; and cholesta-4,22-dien-3-one. NMR data of other hexane fractions indicated the presence of 3β-acetoxy-lup-12,20(29)-diene; 3β-acetoxy-olean-12-ene; 3β-acetoxy-urs-12-ene; and adian-5-ene. All these compounds are first described in B. potabile.

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