摘要:
THE NEW ACIDIC ANTIBIOTIC 18,631 R.P. IS PREPARED BY AEROBICALLY CULTIVATING STREPTOMYCES HYGROSCOPICUS DS 9,751 (NRRL 3418), STREPTOMYHCES ALBOCINERESCENS DS 21,647 (NRRL 3419) OR STREPTOMYCES ROSEOCHROMOGENES, VAR. OSCINTANS DS 12,976 (NRRL 3504) ON AN AQUEOUS NUTRIENT MEDIUM CONTAINING ADDIMILABLE SOURCES OF CARBON, NITROGEN AND INORGANIC SUBSTANCES. THE ANTIBIOTIC IS PARTICULARLY EFFECTIVE AGAINST GRAM-POSITIVE MICROORGANISMS.
摘要:
Pharmaceutical compositions for the treatment of allergies are produced using coumarin derivatives as the active agent. Certain of these compounds and their salts are novel.
摘要:
The present invention provides CLA esters and uses thereof. More particularly, the present invention provides a composition for topical use comprising CLA esters and a topical carrier. In addition, the present invention specifically provides tocopheryl CLA esters, ascorbyl CLA esters and retinyl CLA esters.
摘要:
An aminocoumarin conjugated to a fluorescent label through a secondary amine, is operative as a fluorescent polarization probe of the DNA gyrase B or topoisomerase IV E subunit. The probe is used for detecting topoisomerase inhibitor binding by fluorescence polarization, particularly in a high-through put topoisomerase inhibitor assay.
摘要:
An aminocoumarin conjugated to a fluorescent label through a secondary amine, is operative as a fluorescent polarization probe of the DNA gyrase B or topoisomerase IV E subunit. The probe is used for detecting topoisomerase inhibitor binding by fluorescence polarization, particularly in a high-through put topoisomerase inhibitor assay.
摘要:
A novel process for the preparation of thioethers comprising reacting a silylated thiol of the formulaR--S--SiR.sub.1 R.sub.2 R.sub.3 Iwherein R is an organic group and R.sub.1, R.sub.2 and R.sub.3 are individually selected from the group consisting of alkyl of 1 to 4 carbon atoms with an organic halide, sulfate or sulfonate in the presence of hexamethylphosphoric triamide as a solvent or co-solvent preferably under neutral conditions in aprotic solvents at a temperature between 0.degree. and 150.degree. C.
摘要翻译:一种用于制备硫醚的新方法,其包括使式RS-SiR 1 R 2 R 3 I的甲硅烷基化硫醇反应其中R是有机基团,R 1,R 2和R 3分别选自具有1至4个碳原子的烷基与有机基团 卤化物,硫酸盐或磺酸盐,在六甲基磷酰三胺作为溶剂或共溶剂存在下,优选在中性条件下,在非质子溶剂中,在0至150℃之间。
摘要:
INVENTION CONCERNS SULFUR-CONTAINING 4-HYDROXY-COUMARINS AND THEIR ALKALI METAL SALTS OF THE FORMULA
3-(R-O-S(=O)N-),4-(M-O-)-2H-CHROMEN-2-ONE
WHEREIN M IS HYDROGEN OR ALKALI METAL, R IS ALKYL, W-(CYCLOHEXYL)-N-LOWER ALKYL, BENZYL, HALOBENZYL, LOWER ALKYLBENZYL, (TRIFLUOROMETHYL)BENZYL, NITROBENZYL, ALLYL, HALOALLYL, PHENYL-LOWER ALKYL OR NAPHTHYL-LOWER ALKYL, AND N IS 0, 1 OR 2. THE COMPOUNDS ARE PREPARED BY REACTING 4-HYDROXYCOUMARIN WITH A THIOSULFONATE IN AN ORGANIC MEDIUM AND RECOVERING THE PRODUCT. THE COMPOUNDS ARE USEFUL AS PLANT GROWTH STUNTERS AND AS ANTIMICROBIAL AGENTS.