1,720,996 research outputs found
87. G. Aliotta, M. Della Greca, P. Monaco, G. Pinto, A. Pollio e L. Previtera (1996) Potential Allelochemicals from aquatic plants: their action on microalgae
No full textDegraded Phenalene Metabolites In Eichhornia Crassipes
No full textFive naphthalenedicarboxylic acids have been isolated from the aquatic plant Eichhornia crassipes. The structures 1-5 have been attributed to their permethylated derivatives on the basis of their spectroscopic features. A biogenetic correlation to phenalenes is suggested. © 1993, Taylor & Francis Group, LLC. All rights reserved
Prephytoene alcohol from Myriophyllum verticillatum
No full textPrephytoene alcohol, a biosynthetic intermediate of carotenoids, has been isolated from the aquatic plant Myriophyllum verticillatum. © 1988
2 NEW LIGNAN GLUCOSIDES FROM ARUM-ITALICUM
No full textTwo new lignan glucosides, namely (+)-lariciresinol 4′-O-β-D-glucopyranoside and (+)-lariciresinol 9-O-β-D-glucopyranoside, besides ferulic acid, coniferyl alcohol 4-O-β-D-glucopyranoside, 4-coumaryl alcohol 4-O-β-D-glucopyranoside, (+)-pinoresinol-O-β-D-glucopyranoside, (+)-syringaresinol-O-β-D-glucopyranoside, (+)-lariciresinol and (+)-lariciresinol 4-O-β-D-glucopyranoside, have been isolated and characterized as peracetyl derivatives from Arum italicum. © 1993
Lignans from Arum italicum
No full textTwo new 8-O-3′ neolignans and two new 8-O-4′ neolignan glucosides have been isolated from Arum italicum. The structures and the absolute configurations have been attributed on the basis of the physical data of the compounds and of their peracetylated derivatives. © 1994
Biotransformation of progesterone by the green alga Chlorella emersonii C211-8H
No full text2β-Hydroxyprogesterone, 6β-hydroxyprogesterone, 9α-hydroxyprogesterone, 14α-hydroxyprogesterone, 16α-hydroxyprogesterone and 21-hydroxyprogesterone are the main bioproducts in the progesterone bioconversion by axenic cultures of Chlorella emersonii C211-8h. After 30 days 6β,9α-dihydroxyprogesterone, 6β,21-dihydroxyprogesterone and 16α,21-dihydroxyprogesterone are also formed. In acid conditions the reaction is slower and 2β-hydroxyprogesterone and 16α-hydroxyprogesterone have not been found among the bioproducts. In hyperhaline conditions the yields are generally lower and testololactone is also formed. Copyright © 1996 Elsevier Science Ltd. All rights reserved
Stigmasterols from Typha latifolia
No full textSeveral free and acylglucosylated stigmasterols have been isolated from the aquatic plant Typha latifolia. The structures of three novel acylglucosylsterols have been assigned on the basis of spectroscopic data and by chemical modification studies. © 1990, American Chemical Society. All rights reserved
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