Synthesis and DNA-sequence selectivity of a series of mono- and difunctional 9-aminoacridine nitrogen mustards
摘要:
The aim of this work was to identify nitrogen mustards that would react selectively with DNA, particularly in G-rich regions. A sei ies of mono- and difunctional nitrogen mustards was synthesized in which the (2-chloroethyl)amino functions were connected to the N-9 of 9-aminoacridine by way of a spacer chain consisting of two to six methylene units. The length of the spacer chain connecting the alkylating and putative DNA-intercalating groups was found to affect the preference for the alkylation of different guanine-N-7 positions in a DNA sequence. All of the compounds reacted preferentially at G's that are followed by G as do most other types of nitrogen mustards, but the degree of selectivity was greater. The compounds reacted at much lower concentrations than were required for comparable reaction by mechlorethamine (HN2), consistent with initial noncovalent binding to DNA prior to guanine-N-7 alkylation. The degree of DNA-sequence selectivity increased as the spacer-chain length decreased below four methylene units. Most strikingly, long spacer compounds reacted strongly at 5'-GT-3' sequences, Whereas this reaction was almost completely suppressed when-the spacer length was reduced to two or three methylenes. Mono- and difunctional compounds of a given spacer length showed no consistent difference in DNA-sequence preference.
[EN] BENZAMIDE OR BENZAMINE COMPOUNDS USEFUL AS ANTICANCER AGENTS FOR THE TREATMENT OF HUMAN CANCERS [FR] COMPOSÉS BENZAMIDE OU BENZAMINE À UTILISER EN TANT QU'ANTICANCÉREUX POUR LE TRAITEMENT DE CANCERS HUMAINS
[EN] C-28 AMIDES OF MODIFIED C-3 BETULINIC ACID DERIVATIVES AS HIV MATURATION INHIBITORS<br/>[FR] AMIDES C-28 DE DÉRIVÉS D'ACIDE BÉTULINIQUE MODIFIÉS EN C-3, UTILISÉS COMME INHIBITEURS DE MATURATION DU VIH
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2011153319A1
公开(公告)日:2011-12-08
Compounds having drug and bio-affecting properties, their pharmaceutical compositions and methods of use are set forth. In particular, modified C-3 and C-28 betulinic acid derivatives that possess unique antiviral activity are provided as HIV maturation inhibitors. These compounds are useful for the treatment of HIV and AIDS.
Disclosed herein are substituted phenylcyclohexylglycolate-based muscarinic acetylcholine receptor modulators of Formula I, processes of preparation thereof, pharmaceutical compositions thereof, and methods of use thereof.
本文揭示了基于取代苯基环己基甘醇酸酯的 Formula I 的肌氨酸乙酰胆碱受体调节剂,其制备方法、药物组合物及使用方法。
Raney copper
申请人:Degussa-Huls AG
公开号:US20020038051A1
公开(公告)日:2002-03-28
Raney copper which is doped with at least one metal from the group comprising iron and/or noble metals is used as a catalyst in the dehydrogenation of alcohols.
含有铁和/或贵金属中至少一种金属的Raney铜被用作醇脱氢反应的催化剂。
C-28 AMIDES OF MODIFIED C-3 BETULINIC ACID DERIVATIVES AS HIV MATURATION INHIBITORS
申请人:Regueiro-Ren Alicia
公开号:US20120142653A1
公开(公告)日:2012-06-07
Compounds having drug and bio-affecting properties, their pharmaceutical compositions and methods of use are set forth. In particular, modified C-3 and C-28 betulinic acid derivatives that possess unique antiviral activity are provided as HIV maturation inhibitors. These compounds are useful for the treatment of HIV and AIDS.
Polymer, preparation process thereof, hairtreating compositions and cosmetic compositions
申请人:MITSUI TOATSU CHEMICALS, INC.
公开号:EP0767191A2
公开(公告)日:1997-04-09
Disclosed are polymers (polyaspartic acid derivatives) containing, in the molecule, 1 mol % or more of at least one repeating unit selected from the group consisting of repeating units represented by the following formulas (1) and (2).
These polymers are useful in the preparation of hair-treating compositions and cosmetic compositions having excellent hairdressing properties and good biocompatibility.