Catalyst-free activation of methylene chloride and alkynes by amines in a three-component coupling reaction to synthesize propargylamines
作者:Vikas S. Rawat、Thulasiram Bathini、S. Govardan、Bojja Sreedhar
DOI:10.1039/c4ob00986j
日期:——
Propargylamines are synthesized via metal-free activation of the C–halogen bond of dihalomethanes and the C–H bond of terminal alkynes in a three-componentcoupling without catalyst or additional base and under mild reaction conditions. The dihalomethanes are used both as solvents as well as precursors for the methylene fragment (C1) in the final product. The scope of the reaction and the influence
[EN] ANTI-PARASITIC COMPOUNDS AND USES THEREOF<br/>[FR] COMPOSÉS ANTIPARASITAIRES ET LEURS UTILISATIONS
申请人:MEMORIAL SLOAN KETTERING CANCER CENTER
公开号:WO2017124087A1
公开(公告)日:2017-07-20
The present disclosure provides compounds of Formula (I'), Formula (II), and Formula (III). The compounds described herein may useful in treating and/or preventing protozoan infections in a subject in need thereof, treating and/or preventing trypanosomal infections (e.g., Trypanosoma cruzi (T. cruzi) or Trypanosoma brucei infections) and/or plasmodial infections in a subject in need thereof, treating and/or preventing diseases in a subject in need thereof (e.g., Chagas disease, malaria, and/or sleeping sickness), and may be useful in treating and/or preventing infectious diseases in a subject in need thereof. Also provided in the present disclosure are pharmaceutical compositions, kits, methods, and uses including a compound described herein.
multicomponent reaction that generates functionalized 1,4-dicarbonyl motifs via formal hydrocarbonylation of activated alkynes with propargylamines and water under metal-free conditions. This novel synthesis method utilizes propargylamines and water as carbonyl and proton precursors in which propargylamines are activated in situ by alkynes for α-C(sp3)–H activation and C–N bond cleavage. This method
Asymmetric Synthesis of Allenyl α-Amino Amides by an Isothiourea Catalyzed Enantioselective [2,3]-Sigmatropic Rearrangement
作者:Ling Zhang、Zi-Jing Zhang、Jing-Yu Xiao、Jin Song
DOI:10.1021/acs.orglett.8b02521
日期:2018.9.7
Highly efficient catalytic asymmetric [2,3]-sigmatropicrearrangements of propargyl ammonium salts have been accomplished under mild reaction conditions. In the presence of the chiral isothiourea catalyst, a wide range of allenyl α-amino amide derivatives were obtained in generally good yields (up to 99%) with excellent enantioselectivities (up to 96% ee).
Novel pyrrolidine compound and a process for preparing the same
申请人:Moritani Yasunori
公开号:US20070167440A1
公开(公告)日:2007-07-19
The present invention relates to a novel pyrrolidine compound, which has a potent antagonistic activity against central cannabinoid (CB1) receptor, having the formula [I]: wherein each of R
1
and R
2
is (A) optionally substituted aryl (or heteroaryl) group, or (B) both of the groups combine to form a group of the formula: one of R
3
and R
4
is hydrogen and another is hydrogen, hydroxyl, hydroxyalkyl, etc., or both of R
3
and R
4
combine to form oxo group, R
5
is hydrogen or alkyl, Y is single bond, oxygen atom or a group of the formula: —N(R
7
)—, R
6
is optionally substituted hydrocarbon group or optionally substituted cyclic group, R
7
is alkyl or alkyloxycarbonylalkyl, provided that R
6
is not 4-amino-5-chloro-2-methoxyphenyl group when Y is single bond and one of the R
3
and R
4
is hydrogen and another is hydroxymethyl, or a pharmaceutically acceptable salt thereof.