The present invention provides cryptophycin compounds of Formula I
that are useful in the treatment of neoplasms.
本发明提供了一种在肿瘤治疗中有用的Formula I的cryptophycin化合物。
Total Synthesis of Cryptophycins. Revision of the Structures of Cryptophycins A and C
作者:Russell A. Barrow、Thomas Hemscheidt、Jian Liang、Seunguk Paik、Richard E. Moore、Marcus A. Tius
DOI:10.1021/ja00114a011
日期:1995.3
The convergent total synthesis of cryptophycins C and D is described. It has been shown that in both natural products the absoluteconfiguration of the a-amino acid corresponds to the D-series. The structural assignment for cryptophycin C has been corrected to reflect this fact. Since the structure of cryptophycin A has been correlated to cryptophycin C, the chloro-0-methyltyrosine unit in cryptophycin
描述了隐霉素 C 和 D 的收敛全合成。已经表明,在两种天然产物中,α-氨基酸的绝对构型对应于 D 系列。已更正了隐藻素 C 的结构分配以反映这一事实。由于隐藻素A的结构与隐藻素C相关,隐藻素A中的氯-0-甲基酪氨酸单元具有D-构型。隐藻素是与陆生蓝绿藻 Nostoc sp. 相关的强效肿瘤选择性细胞毒素。GSV 224' 和 Nostoc sp。ATCC 53789.2 每种藻类中的主要细胞毒素,cryptophycin A,对植入小鼠的实体瘤(包括耐药性肿瘤)显示出极好的活性。超过 20 种相关的细胞毒素作为次要成分存在于 GSV 224 菌株中,以及这些化合物中的一些,例如,隐藻素 B 和 C,已被分离出足够的量用于体内评估。~为了获得足够数量的选定天然存在的隐藻素和合成类似物,用于构效关系 (SAR) 研究、临床前评估和人类临床试验,我们设计了一个通用的合成。正如原始论文中所述,Cryptophycins
Selective epoxidation process for preparing cryptophycin compounds and intermediates
申请人:ELI LILLY AND COMPANY
公开号:EP0861839A1
公开(公告)日:1998-09-02
Cryptophycin compounds possessing a β-epoxy moiety may be made with high stereoselectivity at various steps in the overall synthetic process. This invention also provides novel intermediates useful in preparing Cryptophycin compounds.
Catalytic Regioselective Sulfonylation of α-Chelatable Alcohols: Scope and Mechanistic Insight
作者:Michael J. Martinelli、Rajappa Vaidyanathan、Joseph M. Pawlak、Naresh K. Nayyar、Ulhas P. Dhokte、Christopher W. Doecke、Lisa M. H. Zollars、Eric D. Moher、Vien Van Khau、Berta Košmrlj
DOI:10.1021/ja016031r
日期:2002.4.1
This paper describes a convenient protocol for the regioselective sulfonylation of alpha-chelatable alcohols. Typically, the reaction of alpha-heterosubstituted alcohols with 1 equiv of p-TsCl and 1 equiv of Et3N in the presence of 2 mol % of Bu2SnO leads to rapid, regioselective, and exclusive monotosylation. The pKa of the amine was correlated to the reaction rate. A plausible mechanism for this reaction has been proposed on the basis of Sn-119 NMR studies.
Dibutyltin Oxide Catalyzed Selective Sulfonylation of α-Chelatable Primary Alcohols
作者:Michael J. Martinelli、Naresh K. Nayyar、Eric D. Moher、Ulhas P. Dhokte、Joseph M. Pawlak、Rajappa Vaidyanathan
DOI:10.1021/ol990658l
日期:1999.8.1
The reaction of substituted glycols with catalytic dibutyltin oxide, stoichiometric p-toluenesulfonyl chloride, and triethylamine in CH2Cl2 resulted in the complete and rapid sulfonylation at the primary alcohol, The alpha-heterosubstituted primary alcohol moiety appeared optimal for best results, supporting the intermediacy of a five-membered chelate, The role of the amine is discussed, in addition to catalyst requirements and solvent effects.