会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • Polyamine compounds and methods for their production
    • 多胺化合物及其生产方法
    • US3960837A
    • 1976-06-01
    • US503991
    • 1974-09-06
    • Peter W. K. Woo
    • Peter W. K. Woo
    • B01J23/00B01J25/00C07B61/00C07H15/23C07H5/06C07H15/22
    • C07H15/23
    • O-2,6-Diamino-2,3,4,6-tetradeoxy-.alpha.-D-erythro-hexopyranosyl-(1.fwdarw.4)-O-[5-amino-5-deoxy-.beta.-D-xylofuranosyl-(1.fwdarw.5)]-N.sup.1 -[(S)-4-amino-2-hydroxy-1-oxobutyl]-2-deoxystreptamine, also known as aminotrideoxybutirosin A, and acid-addition salts. They have a wide spectrum of antibacterial activity.The above compounds can be produced from aminodeoxybutirosin A by the sequence of reactions which comprises protecting the five primary amino groups by converting them to arylmethoxycarbonyl derivatives, converting the 3',4'-hydroxyl groups to an acetal, acylating the remaining four hydroxyl groups, and hydrolyzing the acetal to produce a key intermediate which is an O-2,6-dideoxy-2,6-bis[[(arylmethoxy)carbonyl]amino]-.alpha.-D-glucopyranosyl-(1.fwdarw.4)-O-[2,3-di-O-acyl-5-deoxy-5-[[(arylmethoxy)carbonyl]amino]-.beta.-D-xylofuranosyl-(1.fwdarw.5)]-6-O-acyl-N.sup.1 -[(S)-2-acyloxy-1-oxo-4-[[(arylmethoxy)carbonyl]amino]-butyl]-2-deoxy-N.sup.3 -[(arylmethoxy)carbonyl]streptamine, generically also identified as protected 5"-aminodeoxybutirosin A. That compound is reacted with methanesulfonyl chloride in pyridine to introduce 3',4'-methanesulfonyloxy groups which are removed by reaction with zinc and sodium iodide to introduce a double bond at the 3',4' position. The acyl groups are hydrolyzed or cleaved as by reaction with ammonia in methanol and the product is reacted with hydrogen in the presence of a catalyst to remove the arylmethoxycarbonyl groups and hydrogenate the double bond with the formation of aminotrideoxybutirosin A.
    • O-2,6-二氨基-2,3,4,6-四脱氧-α-D-赤式 - 六吡喃糖基 - (1-> 4)-O- [5-氨基-5-脱氧-β--D-木糖呋喃糖基 - (1-> 5)] - N1 - [(S)-4-氨基-2-羟基-1-氧代丁基] -2-脱氧链霉素,也称为氨基歧羟基丁硫氨酸A和酸加成盐。 它们具有广谱的抗菌活性。