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Eusiderin
Eusiderin is a neolignan found in ''Virola ''Virola'' is a genus of medium-sized trees native to the South American rainforest and closely related to other Myristicaceae, such as nutmeg. Species are known commonly as ''epená'', ''patricá'', or ''cumala''. They have glossy, dark green le ... sp'' and '' Aniba sp''.Eusiderins and other neolignans from an Aniba species. Silvia M.C. Dias, Joāo B. Fernandes, José G.S. Maia, Otto R. Gottlieb and Hugo E. Gottlieb, Phytochemistry, Volume 25, Issue 1, 23 December 1985, Pages 213-217, References Lignans {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neolignan
The lignans are a large group of low molecular weight polyphenols found in plants, particularly seeds, whole grains, and vegetables. The name derives from the Latin word for "wood". Lignans are precursors to phytoestrogens. They may play a role as antifeedants in the defense of seeds and plants against herbivores. Biosynthesis and metabolism Lignans and lignin differ in their molecular weight, the former being small and soluble in water, the latter being high polymers that are undigestable. Both are polyphenolic substances derived by oxidative coupling of monolignols. Thus, most lignans feature a C18 cores, resulting from the dimerization of C9 precursors. The coupling of the lignols occurs at C8. Eight classes of lignans are: "furofuran, furan, dibenzylbutane, dibenzylbutyrolactone, aryltetralin, arylnaphthalene, dibenzocyclooctadiene, and dibenzylbutyrolactol." Many lignans are metabolized by mammalian gut microflora, producing so-called enterolignans. Food sources Flax ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virola
''Virola'' is a genus of medium-sized trees native to the South American rainforest and closely related to other Myristicaceae, such as nutmeg. Species are known commonly as ''epená'', ''patricá'', or ''cumala''. They have glossy, dark green leaves and clusters of tiny yellow flowers, and may emit a pungent odor. Traditional use Several species of this genus have been used to create hallucinogenic snuff powders. Chemical constituents The tops of '' Virola oleifera'' have been shown to produce lignan-7-ols and verrucosin that have antifungal action regarding '' Cladosporium sphaerospermum'' in doses as low as 25 micrograms. Lignan-7-ols oleiferin-B and oleiferin-G worked for ''Cladosporium cladosporioides'' starting as low as 10 micrograms. Species About 76 species, including: *''Virola aequatorialis'' *''Virola albidiflora'' *''Virola araujovii'' *''Virola atopa'' *''Virola bicuhyba'' *''Virola boliviensis'' *''Virola brachycarpa'' *''Virola caducifolia'' *''Virola calophyl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aniba
''Aniba'' is an American neotropical flowering plant genus in the family Lauraceae. They are present in low and mountain cloud forest in Caribbean islands, Central America, and northern to central South America. Description They are shrubs or trees up to 25 m high, hermaphrodites. The leaves are alternate, entire, and elliptical or narrowly elliptical. The inflorescences are paniculate and axillary, the flowers are arranged in cymes essentially, and those strictly opposite side are small. The fruit is a berry-like drupe dispersed mostly by birds. Fruits are 3 cm long and 1.5 cm wide, with deep domes, and warty. Many species have a valuable timber in yellow wood, others have the wood and bark pleasantly scented. The oils extracted from certain species are used as ingredients in the manufacture of perfumes. Ecology ''Aniba'' is a genus of great ecological importance. It currently includes 41 species, classified into six different subgroups, in which the woody struct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |