Free amino acids, free monosaccharides and total saccharides released upon hydrolysis, sterols, and triterpenoids of the leaves of Aloe barbadensis Miller leaves were determined. Some seventeen amino acids, D-glucose, and D-mannose were present in the water-soluble fraction. Cholesterol, campesterol, β-sitosterol, and lupeol were found in substantial amounts in the lipid fraction. An unknown(s)...

The alkaloid spectra of Datura innoxia plants grown in Egypt and Bulgaria were investigated by GC-MS. Thirty-eight alkaloids were detected in the roots, leaves and fruits of the plants. Five new alkaloids for D. innoxia are reported. Alkaloid spectra of Egyptian and Bulgarian plants differ significantly in respect to their alkaloid composition and main alkaloids accumulated in the plant organs.

Opium poppy (Papaver somniferum) produces a diverse array of bioactive benzylisoquinoline alkaloids and has emerged as a versatile model system to study plant alkaloid metabolism. The plant is widely cultivated as the only commercial source of the narcotic analgesics morphine and codeine. Variations in plant secondary metabolism as a result of genetic diversity are often associated with perturb...

The predominant alkaloids in lotus leaves are aporphine alkaloids. These are the most important active components and have many pharmacological properties, but little is known about their biosynthesis. We used digital gene expression (DGE) technology to identify differentially-expressed genes (DEGs) between two lotus cultivars with different alkaloid contents at four leaf development stages. We...

Arterial hypertension (AHT) remains a major public health problem because for its high frequency and cardiovascular complications. Catharantus roseus (L.) G. Don (Apocynaceae) is one of the plants used in Benin traditional treatment hypertension.The general objective this work to contribute management arterial by identifying determining active principle furosemide from extract roots Don.The was...

The first total synthesis of the cytotoxic alkaloid ritterazine B is reported. features a unified approach to both steroid subunits, employing titanium-mediated propargylation reaction achieve divergence from common precursor. Other key steps include gold-catalyzed cycloisomerizations that install spiroketals and late stage C-H oxidation incorporate C7' alcohol.