A versatile and highly efficient method for the direct synthesis of α-keto esters and 1,2-diketones has been developed. This approach utilizes the oxidative cleavage of a variety of β-ketoesters and 1,3-diketones mediated by an Oxone/aluminum trichloride system. The simple one-step oxidation reaction proceeded selectively in aqueous media to afford products in high yields, short reaction times, and
Acid-promoted reaction of cyclic allylic diols with carbonyl compounds. Stereoselective ring-enlarging tetrahydrofuran annulations
作者:Mark J. Brown、Timothy Harrison、Paul M. Herrinton、Mark H. Hopkins、Kira D. Hutchinson、Larry E. Overman、Pratibha Mishra
DOI:10.1021/ja00014a031
日期:1991.7
high levels of stereocontrol by the title reaction. The scope and limitations of this powerful new method for assembling polycyclic ethers are explored in detail. Conformational analysis of potential oxabicyclo [4.4.0] decanyl, oxabicyclo [4.3.0] nonanyl, and oxabicyclo [4.2.0] octanyl cation intermediates allows the stereochemical outcome of the title reaction to be predicted
Design of Cancer-Specific Antitumor Agents Based on Aziridinylcyclopent[<i>b</i>]indoloquinones
作者:Chengguo Xing、Ping Wu、Edward B. Skibo、Robert T. Dorr
DOI:10.1021/jm990466w
日期:2000.2.1
The merits of N-unsubstituted indoles and cyclopent[b]indoles as DNA-directed reductivealkylatingagents are described. These systems represent a departure from N-substituted and pyrrolo[1, 2-a]-fused systems such as the mitomycins and mitosenes. The cyclopent[b]indole-based aziridinylquinone system, when bearing an acetate leaving group with or without an N-acetyl group, was cytotoxic and displayed
Cytotoxic N-unsubstituted indoles and cyclopent(b)indoles and method of making and using same
申请人:——
公开号:US20040006054A1
公开(公告)日:2004-01-08
The merits of N-unsubstituted indoles and cyclopent[b]indoles as DNA-directed reductive alkylating agents are described. These systems represent a significant departure from N-substituted and pyrrolo[1,2-a] fused systems such as the mitomycins and mitosenes. The cyclopent[b]indole—based aziridinylquinone, when bearing an acetate leaving group, was found to be cytotoxic and displayed significant in vivo activity against syngeneic tumor implants. This particular analogue was unexpectedly superior to the others studied, both in terms of high specificity for the activating enzyme DT-diaphorase and in high % DNA alkylation. Alkylation by a quinone methide intermediate as well as by the aziridinyl group were examined for crosslinking. The possible metabolites of the most active indole species were prepared and found to retain cytotoxicity, strongly suggesting that in vivo activity could also be sustained. The indole systems in the present invention display selectivity for melanoma and for non small cell lung, colon, renal, and prostate cancers when administered in an effective amount. The cancer specificity observed is believed to pertain to differential substrate specificity for DT-diaphorase.
[EN] HPK1 INHIBITORS, PREPARATION METHOD AND APPLICATION THEREOF<br/>[FR] INHIBITEURS D'HPK1, PROCÉDÉ DE PRÉPARATION ET UTILISATION ASSOCIÉS
申请人:ZHUHAI YUFAN BIOTECHNOLOGIES CO LTD
公开号:WO2019206049A1
公开(公告)日:2019-10-31
Disclosed are HPK-1 inhibitors having a structure represented by Formula (X), pharmaceutical compositions comprising the HPK-1 inhibitors, methods of using the HPK-1 inhibitors, such as treating cancers, methods of preparing the HPK-1 inhibitors, and the synthetic intermediates.