Sufizmary Tetrabutylaminoniuin permanganate is an easily prepared crystalline stable compound soluble in organic solveiits; its use for oxidations of organic substrates in pyridine under mild conditions is described.POTASSIUM PERMANGANATE in aqueous solution is a cornmonly used oxidant in preparative organic chemistry.1 Organic substrates are often poorly soluble in the reaction medium. The major disadvantage accompanying its use,

Baeyer-Villiger oxidation of methoxybenzaldehydes with m-chloroperbenzoic acid in boiling dichloromethane, followed by hydrolysis of the resultant formates, is shown to be a convenient method for the preparation of methoxyphenols.

The synthesis and the use of 1,3-dioxan-2-ylmethyltriphenylphosphonium bromide (7) in the synthesis of apunsaturated aldehydes is described.IN connection with extensions of our work on annulen-ones1 we required an efficient method for the synthesis of various ap-unsaturated aldehydes in the furan and thiophen series. The crossed aldol condensation usually gives low yields2 and we were unable to extend it to 5-(diethoxymethyl)-2-furaldehyde (1). The method of

No abstract

The ethyl acetate extract of the leaves of Rhodomyrtus tomentosa (Ait.) Hassk. yielded rhodomyrtone (5) [6,8-dihydroxy-2,2,4,4-tetramethyl-7-(3-methyl-1-oxobutyl)-9-(2-methylpropyl)-4,9-dihydro-1H-xanthene-1,3(2H)-di-one] which had significant activity against Escherichia coli and Staphylococcus aureus. The structural elucidation followed from spectroscopic evidence and from a single-crystal X-ray structural determination.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Extraction of the fresh leaves of Ophiorrhiza filistipula ( Rubiaceae ) has yielded the alkaloids normalindine (2), 7-methoxycamptothecin (6) and strictosidinic acid (II). The configurations of the Strychnos alkaloids dolichantoside and isodolichantoside are revised.

No abstract