C−H Methylation of Iminoamido Heterocycles with Sulfur Ylides**
作者:Prithwish Ghosh、Na Yeon Kwon、Saegun Kim、Sangil Han、Suk Hun Lee、Won An、Neeraj Kumar Mishra、Soo Bong Han、In Su Kim
DOI:10.1002/anie.202010958
日期:2021.1.4
The direct methylation of N‐heterocycles is an important transformation for the advancement of pharmaceuticals, agrochemicals, functional materials, and other chemical entities. Herein, the unprecedented C(sp2)‐H methylation of iminoamido heterocycles as nucleoside base analogues is described. Notably, trimethylsulfoxonium salt was employed as a methylating agent under aqueous conditions. A wide substrate
Nickel-Catalyzed Amide Bond Formation from Methyl Esters
作者:Taoufik Ben Halima、Jeanne Masson-Makdissi、Stephen G. Newman
DOI:10.1002/anie.201808560
日期:2018.9.24
reactions, the synthesis of amide bonds is accomplished primarily by wasteful methods that proceed by stoichiometric activation of one of the starting materials. We report a nickel‐catalyzed procedure that can enable diverse amides to be synthesized from abundant methylester starting materials, producing only volatile alcohol as a stoichiometric waste product. In contrast to acid‐ and base‐mediated amidations
Small-Molecule Choline Kinase Inhibitors as Anti-Cancer Therapeutics
申请人:Chand Pooran
公开号:US20110257211A1
公开(公告)日:2011-10-20
Small molecule choline kinase inhibitors having the following formula:
are provided herein. Also provided herein are pharmaceutical compositions containing Formula I compounds, together with methods of treating cancer, methods of inhibiting choline kinase enzymatic activity, and methods of treating tumors by administering an effective amount of a Formula I compound.
intramolecular amidation, has been established for efficient synthesis of 2H-1,4-benzoxazin-3-(4H)-onesfrom o-halophenols and 2-chloroacetamides. A varity of substrates afford the desired products in good to excellent yields. It is particularly attractive for synthesis of a library of 2H-1,4-benzoxazin-3-(4H)-ones.
Synthesis and antispasmodic activity of lidocaine derivatives endowed with reduced local anesthetic action
作者:Jorge C.S. Costa、Josiane S. Neves、Marcus V.N. de Souza、Rodrigo A. Siqueira、Nelilma C. Romeiro、Nubia Boechat、Patrícia M.R.e Silva、Marco A. Martins
DOI:10.1016/j.bmcl.2007.11.122
日期:2008.2
relationship (SAR) study focused on chemical modifications of the structure of the local anesthetic lidocaine, and indicated analogues having reduced anesthetic potency, but with superior potency relative to the prototype in preventing anaphylactic or histamine-evoked ileum contraction. From the SAR analysis, 2-(diethylamino)-N-(trifluoromethyl-phenyl) and 2-(diethylamino)-N-(dimethyl-phenyl) acetamides were