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9 examples) is synthesized and evaluated for in vitro antibacterial activity. Most of them exhibit excellent and promising effects against both Gram-positive and Gram-negative strains. In some cases, superior MIC activity as compared to the standard drugs ciprofloxacin, sparfloxacin and trovafloxacin is observed. -(NAGAWADE, R. R.; KHANNA, V. V.; BHAGWAT, S. S.; SHINDE*, D. B.; Eur.
1993 stereochemistry stereochemistry (general, optical resolution) O 0030 14 -054 Chiral Synthesis via Organoboranes. Part 35. Simple Procedures for the Efficient Recycling of the Terpenyl Chiral Auxiliaries and Convenient Isolation of the Homoallylic Alcohols in Asymmetric Allyl-and Crotylboration of Aldehydes.-The usual work-up of the products, e.g. (I), of asymmetric allyl or crotyl borination with alkaline hydrogen peroxide proves to be disadvantageous as the chiral auxiliary is destroyed during the oxidation step. Therefore, the authors investigated several work-up procedures which recover the chiral auxiliary, e.g. α-pinene ( III). -(BROWN, H. C.; RACHERLA, U. S.; LIAO, Y.; KHANNA, V. V.; J. Org.
Carboxylic Acids. -Thirteen terminal alkenes such as (I) or (III) are converted into the carboxylic acids (II) or (IV) by hydroboration and subsequent oxidation. -(BROWN, H. C.; KULKARNI, S. V.; KHANNA, V. V.; PATIL, V. D.; RACHERLA, U. S.; J.
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.
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