摘要:
Glycopeptide antibiotics PA-45052 which are produced by Nocardia orientalis PA-45052, show potent activity against gram-positive bacteria, especially against methicillin-resistant bacteria and stimulate growth of animals.
摘要:
A fungicidal composition for agricultural use, which comprises a compound of the formula: wherein R 1 and R 2 are each hydrogen, lower alkyl or cyclo(lower)alkyl; R 3 is lower alkyl or cyclo(lower)alkyl; R4 and R 5 are each hydrogen, lower alkyl, lower alkoxy, halogen-substituted lower alkyl, lower alkyl-substituted silyl, halogen or nitro; A represents an unsaturated hydrocarbon group, a halogen-substituted unsaturated hydrocarbon group, a phenyl group or a heterocyclic group, said phenyl group or heterocyclic group being optionally substituted with not more than three substituents; and Z is -CH 2 -, -CH(OH)-, -CO-, -O-, -S-, -SO-, -NR- (R being hydrogen or lower alkyl), -CH 2 CH 2 -, -CH = CH-, -CH 2 0-, -CH 2 S-, CH 2 S0-, -OCH 2 -, -SCH 2 - or -SOCH 2 -.
摘要翻译:一种农业用杀真菌组合物,其包含下式化合物:其中R 1和R 2各自为氢,低级烷基或环(低级)烷基; R 3是低级烷基或环(低级)烷基; R 4和R 5各自为氢,低级烷基,低级烷氧基,卤素取代的低级烷基,低级烷基取代的甲硅烷基,卤素或硝基; A表示不饱和烃基,卤素取代的不饱和烃基,苯基或杂环基,所述苯基或杂环基任选被不多于三个取代基取代; 且Z为-CH 2 - , - CH(OH) - , - CO - , - O - , - S - , - SO - , - NR-(R为氢或低级烷基) - ,CH 2 -CH 2 - , - CH 2 S - ,CH 2 SO - , - OCH 2 - , - CH 2 - 或-SOCH 2 - 。 米
摘要:
This invention provides an immunoassay of elastase-1, which comprises subjecting (a) labelled elastase-1 treated with Boc-TACK and (b) elastase-1 to be measured to competitive reaction with anit-elastase-1 antibody, wherein the Boc-TACK denotes (CH₃)₃COCO[NHCH(CH₃)CO]₃CH₂Cl.
摘要:
A compound of the formula: wherein the wave line means α-bond or β-bond, which compound is useful as a phospholipase A₂ inhibitor. Process for the production of the compound, pharmaceutical composition containing the compound, and a cell culture of a microorganism Thielavia terricola RF-143 producing the compound are also provided.
摘要:
Pharmaceutical or veterinary preparations for use in the treatment of thromboxane A₂ mediating diseases, comprising a pharmacologically effective amount of at least one compound of the formula: wherein R¹ is carboxyl or 5-tetrazolyl, R² is hydrogen, methyl, hydroxy, chloro, or bromo, or a pharmaceutically acceptable ester or salt thereof, formulated for such use with one or more non-toxic pharmaceutically or veterinarily acceptable carrier and optionally in unit dosage form.
摘要:
The invention provides optically active esters of arylacetic acid of the formula: wherein R¹ is hydrogen or optionally substituted C₁-C₂ alkyl or phenyl or when both taken together form C₂-C₆ alkylene, C₂ or C₄-C₆ alkenylene, or a bicyclic-ring; R² is hydrogen or methyl; X is a single bond or CH₂, C=O, N-R⁴, O, S, CHNHR⁴, CHCH₃, CH-Ar, or CHOR⁵ (provided that when X is single bond or CH₂, C=O, N-R⁴, O, or S, R¹ and R² are not simultaneously hydrogen or methyl); R³ is hydrogen, optionally substituted alkyl, or optionally substituted aralkyl; R⁴ is hydrogen or an amino protecting group; R⁵ is hydrogen or a hydroxy protecting group; and Ar is optionally substituted aryl. These esters may be prepared by the reaction of a σ symmetric acid anhydride with an (R)- or (S)-arylacetic acid derivative in high optical purity, and are useful as intermediates for various optically active natural products and medicines.
摘要:
An anti-mycoplasma agent comprising tropolone, its derivatives, represented by the formula; (wherein R₁ is hydroxy, aliphatic acyloxy, arylacyloxy, arysulfonyloxy, carboxyalkyloxy or its ester, benzoylalkyloxy, alkenyloxy, 1,3-dihydro-3-oxo-1-isobenzofuranyloxy, (2-oxo-5-methyl-1,3-dioxol-4-yl)methyloxy or thiocyanato and R₂ is hydrogen, halogen, hydroxy, alkyl or alkoxy) and their salts as an active ingredient, which has potent activity especially against tylosin-resistant mycoplasma both in vitro and in vivo and is effectively used in treating the diseases caused thereby.
摘要:
A compound of the formula: (wherein R¹ is hydrogen, C₁-C₅ alkyl, C₁-C₅ alkoxy, C₁-C₅ alkoxycarbonyl, or trifluoromethyl; R² is hydrogen, C₁-C₅ alkoxycarbonyl, C₆-C₁₂ aryloxycarbonyl, C₁-C₅ alkanoyloxy-C₁-C₅ alkyl, C₁-C₅ alkoxycarbonyloxy-C₁-C₅ alkyl, C₁-C₅ acylamino-C₁-C₅ alkyl, 2-hydroxy-1-C₂-C₅ alkenyl, phthalimido-C₁-C₅ alkyl, halogeno-C₁-C₅ alkoxycarbonyl-C₁-C₅ alkyl, hydroxy-C₁-C₅ alkyl, C₁-C₅ alkylthio-C₁-C₅ alkyl, or C₁-C₅ alkylsulfinyl-C₁-C₅ alkyl; m is an integer of 0 or 1; R³ and R⁴ each is hydrogen, halogen, cyano, C₁-C₅ alkyl, amino, C₁-C₅ alkoxy, C₆-C₁₂ aryl-C₁-C₅ alkoxy, C₁-C₅ alkoxycarbonyl, fluoro-C₁-C₅ alkoxy, C₁-C₅ alkanoylamino, or carbamoyl) or its salt, being useful as antiulcer agents, is provided.
摘要:
Disclosed is a novel T cell growth factor which is derived from a thymic stroma and promotes the growth of T cell clones and/or thymocytes and a process for its production which comprises culturing thymic stroma cells in a culture medium and collecting a factor promoting the growth of T cells form the supernatant of said culture medium.