摘要:
Optically active cephalosporin analogs are produced by optically selective deacylation of an optically inactive acylated analog. The compounds are useful as intermediates in the preparation of optically active acylated antimicrobial agents.
摘要:
Optically active cephalosporin analogs are produced by optically selective deacylation of an optically inactive acylated analog. The compounds are useful as intermediates in the preparation of optically active acylated antimicrobial agents.
摘要:
Disclosed are optically active cephalosporin analogs which are produced by optically selective deacylation of an optically inactive acylated analog. The compounds are useful as intermediates in the preparation of optically active acylated antimicrobial agents.
摘要:
Optically active cephalosporin analogs of the formula ##STR1## wherein R.sub.2 represents a hydrogen or a group represented by the formula ##STR2## wherein R.sub.3 is a straight or branched lower alkyl group having 1 to 6 carbon atoms, a straight or branched lower alkoxy group having 1 to 6 carbon atoms or a phenyl group and R.sub.4 is a hydrogen or a straight or branched lower alkyl group having 1 to 6 carbon atoms; and A.sub.2 represents a straight or branched lower alkyl group having 1 to 6 carbon atoms or a straight or branched lower alkyl group having 1 to 6 carbon atoms which is substituted with one or two carboxyl groups, are useful as antibacterial agents.
摘要:
A novel series of antibiotics designated the XK-88 series are produced by culturing a microorganism belonging to the genus Streptomyces in a nutrient medium and thereafter recovering the antibiotics from the culture liquor.
摘要:
New antibiotic compounds, Fortimicin factors KG.sub.1, KG.sub.2 and KG.sub.3 are produced by fermentation of microorganisms belonging to the genus Micromonospora. The antibiotic compounds are accumulated in the culture liquor and are isolated therefrom.
摘要:
A new antibiotic, Fortimicin A, is produced by fermentation of a microorganism belonging to the genus Micromonospora. The antibiotic is accumulated in the culture medium and is isolated therefrom.
摘要:
Disclosed is a whitening cosmetic composition comprising .gamma.-L-glutamyl-L-cystine, .gamma.-L-glutamyl-L-cysteine disulfide, oxidized glutathione or a derivative thereof, the amino group of which is acylated with an alkanoyl group or an aroyl group. The whitening cosmetic composition of the present invention have extremely good in water solubility and heat stability and stability during storage and show a melanin formation inhibitory activity against melanoma cells without any cytotoxicity.
摘要:
Cellulase may be prepared in good yield and at relatively low cost by culturing certain mutant strains of the genus Trichoderma, which exhibit increased inducibility of cellulase by L-sorbose, in medium wherein the carbon source comprises cellulose-containing material of plant origin, for example, bagasses, waste papers, rice plant hulls and straws or soybean wastes. Preferred mutant strains are exemplified by Trichoderma reesei PC-1-4, PC-3-7, X-30 and X-31.
摘要翻译:纤维素酶可以以良好的产量和相对较低的成本通过培养在其中碳源包含植物来源的含纤维素的材料的培养基中显示出增加的L-山梨糖纤维素酶诱导性的木霉属的某些突变菌株 ,bag bag es。。。。。。。。。。。。。。。。。。。。。。 优选的突变株是里氏木霉PC-1-4,PC-3-7,X-30和X-31。