V (Tb45) 和 U (Tb46) 和 pretubulysin D (PTb-D43) 等天然微管溶素的改进、简化的全合成,以及它们在合成设计的微管溶素类似物(Tb44、PTb-D42、PTb-D47-PTb)中的应用-D49 和 Tb50-Tb120),进行了描述。合成化合物对某些癌细胞系的细胞毒性评估揭示了许多具有特殊效力的新型类似物[例如,Tb111:IC50 = 40 pM 对 MES SA(子宫肉瘤)细胞系;针对 HEK 293T(人胚胎肾癌)细胞系的 IC50 = 6 pM;和 IC50 = 1.54 nM,对 MES SA DX(具有明显多重耐药性的 MES SA)细胞系]。这些研究产生了一组有价值的构效关系,为进一步的分子设计、合成和生物学评价研究提供指导。
Total Synthesis of <i>N</i><sup>14</sup>-Desacetoxytubulysin H
作者:Peter Wipf、Zhiyong Wang
DOI:10.1021/ol070415q
日期:2007.4.1
see text] The N14-desacetoxy analogue of tubulysin H was prepared in 20 steps and 2.1% overall yield. Our strategy features a thiazole anion addition to assemble the tubuvaline residue at the C(10)-C(11) bond, as well as acylations at N5, N14, and N17. This iterative coupling approach, as well as the removal of the labile N,O-acetal at N14, enables the synthesis of analogues for detailed studies of structure-activity
[EN] DESACETOXYTUBULYSIN H AND ANALOGS THEREOF<br/>[FR] DÉSACÉTOXYTUBULYSINE H ET SES ANALOGUES
申请人:UNIV RICE WILLIAM M
公开号:WO2016138288A1
公开(公告)日:2016-09-01
In one aspect, the present disclosure provides tubulysin analogs of the formula (I) wherein R1, R2, R3, R4, X1, X2, X3, and A1 are as defined herein. In another aspect, the present disclosure also provides methods of preparing the compounds disclosed herein. In another aspect, the present disclosure also provides pharmaceutical compositions and methods of use of the compounds disclosed herein.
Z or Fmocaminoacidfluorides have been prepared from the protected aminoacids and cyanuric fluoride, and have been tested both in the condensation with simple aminoacid esters and in Solid Phase PeptideSynthesis.
[EN] TUBULYSIN DERIVATIVES<br/>[FR] DÉRIVÉS DE TUBULYSINE
申请人:MEDIMMUNE LLC
公开号:WO2015157594A1
公开(公告)日:2015-10-15
Novel tubulysin derivatives which may be useful as cytotoxic agents to provide therapeutic benefits in the treatment of various types of cancers, alone or as drug conjugates with antibodies are provided. The tubulysin derivatives consist of a tetrapeptide scaffold comprising methyl and ethyl substituted piperidines. The tubulysin conjugates further comprise monoclonal antibody via succinimide linkers.
The present invention relates to anti-HER2 binding molecules (e.g., antibodies and antigen binding fragments thereof), derived HER2-binding molecules (e.g., bispecific anti-HER2 antibodies), and antibody-drug conjugates (ADC) that bind the extracellular domain of the HER2 receptor. Also provided are pharmaceutical formulation comprising the disclosed compositions and method for the treating diseases associated with HER2-mediated signal transduction.