Quinone Methide Phosphodiester Alkylations under Aqueous Conditions
作者:Qibing Zhou、Kenneth D. Turnbull
DOI:10.1021/jo015792+
日期:2001.10.1
of aqueous dibenzyl, dibutyl, or diethyl phosphate in acetonitrile at pH 4.0 and 7.0. These kinetic studiesfurther establish that the phosphodiester alkylation reactions are acid-catalyzed, second-order processes. The rate constant for phosphodiester alkylation was found to range from approximately 370-3700 times the rate constant of quinone methide hydrolysis with diethyl and dibenzyl phosphate,
在水性条件下,已完成了对磷酸二酯与对醌甲基化物烷基化的详细分析。磷酸二酯烷基化和水解的相对速率已通过(1)NMR分析在缓冲的磷酸二乙酯/乙腈溶液(1:9 v / v,pH 4.0中)中的2,6-二甲基-对醌甲基化物的反应)。通过UV分析在pH 4.0和7.0下的28.5%的无机磷酸盐水溶液在乙腈中的溶液中UV分析确认了醌甲基化物的水解速率。同样,在28.5%的二苄基,二丁基或二乙基磷酸酯水溶液在pH 4.0和7.0的乙腈溶液中进行UV分析,也证实了醌甲基化物使磷酸二酯烷基化的速率。这些动力学研究进一步证实,磷酸二酯烷基化反应是酸催化的二级过程。
Structural characterization of a dizinc(<scp>ii</scp>) complex with bridging η<sup>2</sup>-phosphate diesters and internal N–H⋯O–P hydrogen bonding
作者:Juan C. Mareque Rivas、Rafael Torres Martín de Rosales、Simon Parsons
DOI:10.1039/b312281f
日期:——
The firststructurally characterized dizinc(II) complex with bridging η2-phosphate diesters, in this case dibenzyl phosphate, and internal N–H⋯O–P H-bonding are reported.
Carboxylic acid, phosphate or phosphonate substituted quinazolin-4-ylamine analogues as capsaicin receptor modulators
申请人:Bakthavatchalam Rajagopal
公开号:US20060089354A1
公开(公告)日:2006-04-27
Acid-substituted quinazolin-4-ylamine analogues are provided. Such compounds are ligands that may be used to modulate specific receptor activity in vivo or in vitro, and are particularly useful in the treatment of conditions associated with pathological receptor activation in humans, domesticated companion animals and livestock animals. Pharmaceutical compositions and methods for using them to treat such disorders are provided, as are methods for using such ligands for receptor localization studies.
The present invention concerns antitumor compounds. More particularly, the invention provides novel taxane derivatives, pharmaceutical compositions thereof, and their use as antitumor agents.
Triheterocyclic compounds, compositions, and methods for treating cancer or viral diseases
申请人:Dairi Kenza
公开号:US20050267073A1
公开(公告)日:2005-12-01
The present invention relates to novel Triheterocyclic Compounds, compositions comprising a Triheterocyclic Compound, and methods useful for treating or preventing cancer or a neoplastic disorder comprising administering a Triheterocyclic Compound. The compounds, compositions, and methods of the invention are also useful for inhibiting the growth of a cancer cell or neoplastic cell, treating or preventing a viral infection, or inhibiting the replication and/or infectivity of a virus.