derivatives (10), acid (11), esters (12) and amides (13) were synthesized starting from 2. 7-Ethyl- (4b) and 7-propylcamptothecin (4c), acyloxymethyl compounds 6a, 6c and ethyl ester (12b) exhibited higher antitumor activity than 1 against L1210 in mice.
Metal-free C–H alkylation of heteroarenes with alkyltrifluoroborates: a general protocol for 1°, 2° and 3° alkylation
作者:Jennifer K. Matsui、David N. Primer、Gary A. Molander
DOI:10.1039/c7sc00283a
日期:——
A photoredox-catalyzed C–H functionalization of heteroarenes using a variety of primary, secondary, and tertiary alkyltrifluoroborates is reported. Using Fukuzumi's organophotocatalyst and a mild oxidant, conditions amenable for functionalizing complex heteroaromatics are described, providing a valuable tool for late-stage derivatization. The reported method addresses the three major limitations of
据报道,使用各种伯,仲和叔烷基三氟硼酸酯进行光氧化还原催化的杂芳烃的CH官能化。描述了使用Fukuzumi的有机光催化剂和温和的氧化剂,适合于功能化复杂杂芳族化合物的条件,为后期衍生化提供了有价值的工具。报告的方法解决了先前报道的光氧化还原介导的Minisci反应的三个主要局限性:(1)使用超化学计量的自由基前体,(2)反复选择性,以及(3)引入昂贵的光催化剂。另外,使用了许多前所未有的复杂烷基,从而增加了Minisci化学可利用的化学空间。为了展示后期功能化中的应用程序,合成了奎宁和喜树碱类似物。最后,进行了NMR研究以提供合理的杂芳基活化作用,该活化作用允许使用单当量的自由基前体,并且还提高了区域选择性。因此,在酸催化剂和BF 3的存在下观察到1 H和13 C NMR观察到独特的杂芳基物质。
COMPOSITIONS AND METHODS FOR TREATMENT FOR NEOPLASMS
申请人:CombinatoRx, Incorporated
公开号:EP1883407A1
公开(公告)日:2008-02-06
EP1883407A4
申请人:——
公开号:EP1883407A4
公开(公告)日:2009-07-01
Compositions and methods for treatment for neoplasms
申请人:Johansen M. Lisa
公开号:US20060264384A1
公开(公告)日:2006-11-23
The invention features compositions including two, three, or more agents useful in treating a patient with a neoplasm, methods for treatment of a patient with a neoplasm such as cancer (e.g., brain cancer), kits which include one, two, three, or more agents useful in the treatment of cancer, as well as methods for identifying combinations of compounds potentially useful in treating a patient with a neoplasm.