Abstract Several orthogonally protected spermidine and norspermidine derivatives have been synthesized via cyanoethylation of monoprotected 1,4‐butanediamine (putrescine) or 1,3‐propanediamine followed by protection of their secondary amino groups and final reduction of the nitriles with lithium aluminum hydride in etheral solution at 0°C, thus affording protected norspermidine or spermidine that may
The first totalsynthesis of amino sugar antibiotic glycocinnasperimicinD (1) has been achieved by a convergent, three‐component coupling strategy. The key steps involve the Heck–Mizoroki reaction by using the iodophenyl glycoside 50 and acryl amide 32 to furnish the right core structure of 1, and the construction of the urea glycoside employing the reaction of glycosyl isocyanate 8 with amino sugar
Asymmetric Synthesis of Bioactive Hydrodibenzofuran Alkaloids: (−)-Lycoramine, (−)-Galanthamine, and (+)-Lunarine
作者:Peng Chen、Xu Bao、Le-Fen Zhang、Ming Ding、Xiao-Jie Han、Jing Li、Guo-Biao Zhang、Yong-Qiang Tu、Chun-An Fan
DOI:10.1002/anie.201103198
日期:2011.8.22
Divergent route: A direct CC bond‐forming approach to the key aryl‐substituted all‐carbon quaternary stereogenic center present in bioactive hydrodibenzofuran alkaloids has been discovered. This approach involves an unprecedented organocatalyticenantioselectiveMichaeladdition of α‐cyanoketones with acrylates (see scheme) and was used in a novel and divergent synthetic strategy for the title compounds
Method of treating a viral infection by administering a steroid compound
申请人:Magainin Pharmaceuticals Inc.
公开号:US05763430A1
公开(公告)日:1998-06-09
A method of treating a viral infection includes administering an effective amount of a compound having the following structure: ##STR1## or a pharmaceutically acceptable salt thereof. This compound treats the viral infection by suppressing the growth of a viral target cell. As one specific example, this compound may be used to treat HIV infection.