Biomedical subjects

S Fkih-Tetouani

Publications and source records attributed to S Fkih-Tetouani.

3 recordsLinked to original sources

PubMed1998

Saponins from Zygophyllum gaetulum.

Three new bisdesmosidic triterpene saponins, zygophylosides I (1), L (2) and M (3), and three known quinovic acid glycosides were isolated from Zygophyllum gaetulum. The new compounds were determined to be 3 beta-O-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranosyl- (1-->2)-beta-d-glucopyranosylurs-20(21)-en-28-oic acid 28-O-[beta-D-2-O-sulfonylglucopyranosyl] ester (1),3 beta-O- [alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranosyl- (1-->2)-beta-D-glucopyranosyl]urs-20(21)-en-28-oic acid 28-O-[beta-D-glucopyranosyl] ester (2), and 3 beta-O-beta-D-quinovopyranosyl-27-nor-olean-12-en-28-oic acid 28-O-beta-D-glucopyranosyl ester (3) by use of 1D and 2D NMR techniques.

Carbohydrate Sequence↗

PubMed1993

Quantitative structure-biodegradability relationships (QSBRs) using modified autocorrelation method (MAM).

Quantitative structure-biodegradability relationships (QSBRs) were established for a set of various organic compounds using autocorrelation components as molecular descriptors. The molecules were described by their size (van der Waals volume), electronegativity, hydrogen bonding donor and acceptor ability and lipophilicity (log P). In addition to the established models for alcohols, ketones, and aromatics, we have elaborated a model for both alcohols and ketones (5-day BOD = 0.06 V0 + 1.067 log P - 0.356 (log P)2; n = 29, r = 0.958, s = 0.44, F = 145.6) and another for all the compounds (5-day BOD = 0.065 V0 + 0.748 log P - 0.316 (log P)2; n = 43, r = 0.906, s = 0.575, F = 91.2).

Alcohols↗

PubMed1992

Triterpenoid saponins from Argania spinosa.

Five new oleanane saponins named arganine A, B, D, E and F and two known saponins: arganine C and mi-saponin A were isolated from the kernel of Argania spinosa. The structures of these saponins were elucidated by using 1H NMR, 1H-1H COSY NMR, 13C NMR, FAB mass spectrometry and chemical evidence.

Carbohydrate Sequence↗