The potassium permanganate oxidation of steroidal homoannular dienes
نویسندگان
چکیده
منابع مشابه
Suicidal ingestion of potassium permanganate.
BACKGROUND Potassium permanganate is used clinically as an antiseptic and antifungal agent. Ingestion of potassium permanganate may result in damage to the upper gastrointestinal tract. Burns and ulceration of the mouth, esophagus and stomach occur due to its action. Emergency endoscopy is useful to assess the severity of damage and also to guide management. METHODS We reported a patient pres...
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Permanganate oxidation of benzaldehyde and p-nitrobenzaldehyde goes by two paths, i.e. a major one which is responsible for the normal oxidation giving good second order kinetic and minor path which involves a very small percent of a radical species formed by hydrogen atom abstraction by the permanganate ion. A mechanism involving Hydrogen atom abstraction by permanganate from the alkoxide ion ...
متن کاملOn the Optical Activity of Steroidal 5 , 7 - Dienes
Circular dichroism (CD) data are reported of a series of 9,10stereoisomeric steroidal 5,7-dienes. In general the effects in the longest wavelength transition (270-280 nm) are large (Mm" 10---30) and consignate with respect to the diene helicity rule. The magnitude of the CD appears to vary markedly with the substituent at C-3 and at C-17, and with solvent. In the case of the 9a,10p-H dienes, va...
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Introduction The terms sewage, sludge, municipal wastewater, and others related to the collection and disposal of human and industrial wastes almost automatically “trigger” a negative reaction by the general public, due primarily to the odors that are coincidental to the transport and treatment of wastewater. I t is probably true that every sewage collection system and treatment plant has encou...
متن کاملInactivation of Salmonella phosphoribosylpyrophosphate synthetase by oxidation of a specific sulfhydryl group with potassium permanganate.
Phosphoribosylpyrophosphate synthetase from Salmonella typhimurium contains four cysteine residues per subunit. Three of these react readily with 5, 5'-dithiobis(2-nitrobenzoic acid) (DTNB), forming an active derivative with kinetic and physical properties similar to the native enzyme, but one reacts only under denaturing conditions. Stoichiometric amounts of KMnO4 inactivate the DTNB-treated e...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1987
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v87-112