Hsp90 has recently emerged as a promising biological target for treatment of cancer. Herbimycin A and other members of the benzoquinoid ansamycin class of natural products are known to inhibit Hsp90 activity. The total synthesis of herbimycin A was achieved from the commercially available Roche ester 1 by using allylmetals to control the stereogenic centers at C6, C7, C10, C11, and C12 and a ring-closing metathesis to control the (Z)-double bond of the (E,Z)-dienic moiety.
Conversion of Aziridinemethanol Sulfonate Esters to Allylic Amines via Tellurium Chemistry<sup>1</sup>
作者:Aurora S. Pepito、Donald C. Dittmer
DOI:10.1021/jo962024n
日期:1997.11.1
Sulfonate esters of aziridinemethanols are converted to allylic amines by treatment with telluride ion obtained by reduction of elemental tellurium. In the course of the reaction, tellurium(0) is reformed and may be reused, thus removing the need to dispose of a key reagent. The telluride reaction yields optically active allylic amines from optically active aziridinemethanols. In contrast to many ring-openings
Pyrrole-Based Anion-Responsive π-Electronic Molecules as Hydrogen-Bonding Catalysts
作者:Goki Hirata、Hiromitsu Maeda
DOI:10.1021/acs.orglett.8b00855
日期:2018.5.18
boron complexes as hydrogen-bonding donor organocatalysts were examined by the Mannich-type reaction of N-acyl heteroarenium chlorides with 1-methoxy-2-methyl-1-trimethylsiloxy-1-propene, as well as by the classical N-alkylation of amines with trityl chloride under base-free conditions. 1H NMR examinations of the hydrogen-bonding interaction between the pyrrole NH of the catalyst and the Cl– in the
N-酰基杂芳基氯化物与1-甲氧基-2-甲基-1-三甲基甲硅烷氧基-1-丙烯的曼尼希型反应以及经典的N检验了二吡咯基二酮硼配合物作为氢键供体有机催化剂的能力。在无碱条件下用三苯甲基氯对胺进行烷基化。1个催化剂的吡咯NH和氯之间的氢键相互作用的1 H NMR检查-在Ñ酰基heteroarenium盐建议的激活Ñ酰基heteroarenium氯化物阴离子通过由催化剂发生结合。
Libraries for Receptor-Assisted Combinatorial Synthesis (RACS). The Olefin Metathesis Reaction
作者:Thomas Giger、Maria Wigger、Stephan Audétat、Steven A. Benner
DOI:10.1055/s-1998-1737
日期:1998.6
A library of alkenes is generated using the olefin metathesis reaction, and converted to a set of diols suitable for a receptor assisted combinatorial synthesis (RACS) experiment with borate as a linker.
[EN] SYNTHETIC SPHINGOLIPID-LIKE MOLECULES, DRUGS, METHODS OF THEIR SYNTHESIS AND METHODS OF TREATMENT<br/>[FR] MOLÉCULES DE TYPE SPHINGOLIPIDE SYNTHÉTIQUES, MÉDICAMENTS, PROCÉDÉS POUR LEUR SYNTHÈSE ET PROCÉDÉS DE TRAITEMENT
申请人:UNIV CALIFORNIA
公开号:WO2017053990A1
公开(公告)日:2017-03-30
Small molecules comprised of azacyclic constrained sphingolipid-like compounds and methods of their synthesis are provided. Formulations and medicaments are also provided that are directed to the treatment of disease, such as, for example, neoplasms, cancers, and other diseases. Therapeutics are also provided containing a therapeutically effective dose of one or more small molecule compounds, present either as pharmaceutically effective salt or in pure form, including, but not limited to, formulations for oral, intravenous, or intramuscular administration.