Chemical Constituents of Cyperus esculentus Leaves and the Protective Effect against Agricultural Fungicide-Induced Hepatotoxicity.

Cyperus esculentus is cultivated as a crop plant due to its edible and oily tubers (tiger nut). However, little is known about the phytochemicals and bioeffects of the leaves. This study was conducted to identify and quantify the chemical constituents of C.

Flavan-3-ol-cysteine and acetylcysteine conjugates from edible reagents and the stems of Cynomorium songaricum as potent antioxidants.

Flavan-3-ol derivatives, including 3 cysteine conjugates and 3 acetylcysteine conjugates, were prepared using Cynomorium songaricum and edible reagents. The structures were determined, based on NMR and MS spectra. All compounds had stronger radical-scavenging activity than catechin and epicatechin.

Chemical constituents and pharmacologic actions of Cynomorium plants.

The stem of Cynomorium songaricum is a traditional Chinese medicine reputed to have tonic effects. C. coccineum growing in northern Africa and the Mediterranean region is regarded in Arabian medical practice as the "treasure of drugs".