Coordination complexes having tethered therapeutic agents and/or targeting moieties, and methods of making and using the same
申请人:——
公开号:US20040235712A1
公开(公告)日:2004-11-25
In part, the present invention is directed to coordination complexes comprising a therapeutic agent. In one aspect, the subject compositions comprise a platinum metal center and a covalently attached therapeutic agent.
Oligonucleotide Tagging for Copper-Free Click Conjugation
作者:Anup Jawalekar、Sudip Malik、Jorge Verkade、Brian Gibson、Nancy Barta、John Hodges、Alan Rowan、Floris van Delft
DOI:10.3390/molecules18077346
日期:——
synthetic oligonucleotides is feasible by standard solid-phase phosphoramidite chemistry. A range of phosphoramidite building blocks is presented for incoporation of BCN or azide, either on-support or in solution. The usefulness of the approach is demonstrated by the straightforward and high-yielding conjugation of the resulting oligonucleotides, including biotinylation, fluorescent labeling, dimerization
申请人:Zhejiang Medicine Co., Ltd., Xinchang Pharmaceutical Factory
公开号:US20150011777A1
公开(公告)日:2015-01-08
Abstract The invention discloses a D-biotin preparation method. In the prior art, with a synthesis method utilizing malonic acid diester as raw materials, impurities are also produced along with the obtained D-biotin. The D-biotin preparation method is characterized in that with the presence of dimethyl sulfoxide and inorganic base as catalysts, methane tricarboxylic acid trialkyl ester and (3aR, 8aS, 8bS)-1,3-dibenzyl-2-oxo-10H-iminazole [3,4-d] thiophene [1,2-a] sulfuryl halide are subjected to condensation reaction in methylbenzene solvent to obtain intermediate (3 aS,4S,6aR)- 1,3 -dibenzyl-4-(ω,ω,ω-3-methoxycarbonylbutyl)-4H- 1H-thiophene[3,4-d]iminazol e-2,4(1H)-ketone, and the D-biotin is obtained after the intermediate is treated by the aftertreatment method. By the D-biotin preparation method, production of the impurities is avoided, quality of the biotin is greatly improved on the existing basis, and side reaction is avoided too.