Thiophilic Lewis acids (e.g. zinc iodide) have a pronounced catalytic effect on the formal [2+2] cycloaddition of alkynyl silyl sulfides 2 and Schiff bases 3 to give 2-azetidinethiones 4. In contrast to uncatalyzed reactions, a large number of functionalities is tolerated and yields are significantly improved.
SMALL MOLECULE INHIBITORS OF MCL-1 AND USES THEREOF
申请人:THE REGENTS OF THE UNIVERSITY OF MICHIGAN
公开号:US20150284387A1
公开(公告)日:2015-10-08
This invention is in the field of medicinal chemistry. In particular, the invention relates to a new class of small-molecules having pyrazolopyridine structure which function as inhibitors of Mcl-1 protein, and their use as therapeutics for the treatment of cancer and other diseases.
A nucleophilic additionreaction to N-methylaldimines without acid or metal species is described. A novel reagent, dicyanomethyl acetate, is used as a nucleophile to give alpha-(N-methyl-N-acetyl)amino acid methyl esters in excellent yield.
C 2 symmetrical diamines are efficiently obtained by reductive coupling of imines with the couple Zn/Me3SiCl. This high yielding method is very practical and cheap for large scale preparation.
通过 Zn/Me3SiCl 与亚胺的还原偶联,可以高效地获得 C 2 对称二胺。这种高产率方法非常实用,而且成本低廉,适合大规模制备。
Methods for the site-selective coupling of a first agent to a second agent
申请人:UNIVERSITEIT GENT
公开号:US11053279B2
公开(公告)日:2021-07-06
The present invention relates to a method for site-selective coupling of a first agent to a second agent, comprising the steps of: contacting a first agent comprising at least one furan moiety with an activation signal and with a second agent comprising at least one hydrazine moiety or at least one hydroxylamine moiety, thereby activating said furan moiety to an activated furan moiety; and reacting said activated furan moiety with the hydrazine moiety or the hydroxylamine moiety, thereby site-selectively coupling said first agent to said second agent.