Disclosed are compounds of Formula (Ia), and pharmaceutically acceptable salts thereof,
wherein X, Y, R
1
, R
2
, R
3A
, R
3B
, and R
4
are as described herein. The compounds may be used as agents in the treatment of diseases, including cancer. Also disclosed are pharmaceutical compositions comprising one or more compounds of Formula (Ia).
Stereoselective Synthesis of β-Substituted β-Amino Sulfones and Sulfonamides via Addition of Sulfonyl Anions to Chiral <i>N</i>-Sulfinyl Imines
作者:Francisco Velázquez、Ashok Arasappan、Kevin Chen、Mousumi Sannigrahi、Srikanth Venkatraman、Andrew T. McPhail、Tze-Ming Chan、Neng-Yang Shih、F. George Njoroge
DOI:10.1021/ol053132b
日期:2006.2.1
[reaction: see text] A highly stereoselective synthesis of beta-amino sulfones and sulfonamides via addition of sulfonyl anions to chiral N-sulfinyl imines is described. The addition reaction proceeds in good yield (75-99%) and stereoselectivity.
Catalytic alkylation reactions of weakly acidic carbonyl and related pronucleophiles such as amides, esters, and sulfonamides with substituted alkenes have been reported. In the presence of a strong Brønsted base catalyst system, potassium hexamethyldisilazide and 18-crown-6 ether, the desired reactions proceeded in high yields at ambient temperature with a wide substrate scope. These are atom-economical
4-addition reactions of alkanesulfonamides were developed on the ‘product base’ strategy. Alkanesulfonamides reacted with α,β-unsaturatedamides in good to high yields with good to high diastereo- and enantioselectivities using a chiral alkaline metal amide. To our knowledge, this is the first example of a catalytic asymmetric C–C bond-forming reaction using an alkanesulfonamide without any activating group
Photochemical Regioselective C(sp<sup>3</sup>)–H Amination of Amides Using <i>N</i>-Haloimides
作者:Lei Pan、Joseph Elmasry、Tomas Osccorima、Maria Victoria Cooke、Sébastien Laulhé
DOI:10.1021/acs.orglett.1c00831
日期:2021.5.7
A metal-free regioselective C(sp3)–H amination of amides using N-haloimides in the presence of lithium tert-butoxide and visible light is presented herein. This photoexcited approach is straightforward, and it aminates a wide variety of amides under mild conditions without the use of photocatalysts, external radical initiators, or oxidants. A halogen-bonded intermediate between the tert-butoxide base