A practical synthesis of polyhydroxy- and regiospecifically methylated flavone-3-ols which are components of commercial 'seabuckthorn flavone' has been achieved by modified Algar-Flynn-Oyamada method. Antioxidant activities of seabuckthorn extracts, isolated products and a number of flavone-3-ols have been determined. Structure-activity relationships have been discussed. Amongst the compounds t...

amaryllidaceae is a well-known family for its high alkaloidal content. these alkaloids comprise a unique group of bases that have been found to occur in this family. the amaryllidaceae alkaloids represent a large and still expanding group of isoquinoline alkaloids, the majority of which are not known to occur in any other family of plants this article reports on the phytochemical investigation ...

With the recent drop in natural gas prices in the United States, there is heightened interest to use methanotrophic bacteria to produce commercial products such as liquid fuels. This project was recently funded to explore this paradigm. This paper describes a bacterium that grows on methane and produces copious amounts of polyhydroxy butyrate. Methane-to-liquid fuels workshop http://arpa-e.ener...

In the course of attempts to find water-soluble derivatives of riboflavin, a study was made of the complexes formed between riboflavin and compounds of boron. The discovery was made that when proper pH control is exercised stable solutions of riboflavin-boron complex can be prepared of at least 25 times the natural solubility of riboflavin; i.e., a concentration of about 0.3 per cent as against...

The unique polycyclic fused ring systems of Daphniphyllum alkaloids, along with their extensive bioactivities, make this family of alkaloids especially attractive targets for total synthesis and biogenetic studies. Successive discoveries of new alkaloids with unprecedented skeletons have made a great contribution to structural diversities of alkaloids elaborated by plants of the genus Daphniphy...

background & aim: a. belladonna (family: solanaceae) is one of important pharmaceutical plants which contain tropane ‎alkaloids. tropane alkaloids are distinct group of secondary metabolites of the ‎solanaceae family.  the most important alkaloids of a. belladonna are atropine and hyoscine that are used extensively because of their medicinal properties. therefore identification and ‎determi...