Hydrogen‐bond mediated coupling of 1,2,3‐triazoles to indoles and pyrroles results in N2 selective functionalization of the triazole moiety in moderate to excellent yields. The reaction was tolerant of un‐, mono‐ and disubstituted triazoles and was applied to synthesize tryptophan derived fluorescent amino acids.
[EN] HEPATITIS B ANTIVIRAL AGENTS<br/>[FR] AGENTS ANTIVIRAUX DE L'HÉPATITE B
申请人:ENANTA PHARM INC
公开号:WO2017011552A1
公开(公告)日:2017-01-19
The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: which inhibit the protein(s) encoded by hepatitis B virus (HBV) or interfere with the function of the HBV life cycle of the hepatitis B virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HBV infection. The invention also relates to methods of treating an HBV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
Preparation of 1H-1,2,3-Triazoles by Cuprous Ion Mediated Cycloaddition of Terminal Alkyne and Sodium Azide
作者:Li-Hui Lu、Jia-Hao Wu、Chia-Hsi Yang
DOI:10.1002/jccs.200800061
日期:2008.4
1H-1,2,3-triazoles can be prepared in good yield by the reaction of terminalalkyne and sodiumazide in the presence of cuprous chloride at a temperature higher than 70 °C. The alkyne is unactivated and the reaction has to be carried out under inert gas. At room temperature, the reaction first gives a Cu(I)-azide complex which is converted to a Cu-alkyne complex when the temperature is raised to higher
末端炔烃与叠氮化钠在氯化亚铜存在下,在高于 70 ℃的温度下反应,可以高收率地制备 1H-1,2,3-三唑。炔烃是未活化的,反应必须在惰性气体下进行。在室温下,反应首先产生 Cu(I)-叠氮化物配合物,当温度升至高于 70 °C 时,该配合物转化为 Cu-炔烃配合物。Cu(I)-炔烃配合物和叠氮化物离子从Cu(I)解离或配位到Cu(I)的反应然后得到1H-1,2,3-三唑。
Cu-Catalyzed Site-Selective and Enantioselective Ring Opening of Cyclic Diaryliodoniums with 1,2,3-Triazoles
作者:Zengyin Chao、Mingming Ma、Zhenhua Gu
DOI:10.1021/acs.orglett.0c02256
日期:2020.8.21
A Cu-catalyzed enantioselective ring-opening/triazolylation reaction is reported. The reaction shows excellent chemoselectivity regarding the three different nitrogen atoms of 1,2,3-triazoles. The optically enriched axially chiral aryl iodides thus obtained were readily derivatized to different types of chiral phosphine ligands and their corresponding copper or palladium complexes.
Diamine-mediated N<sup>2</sup>-selective β-selenoalkylation of triazoles with alkenes
作者:Li-Li Zhu、Lifang Tian、Bin Cai、Guanglu Liu、Hui Zhang、Yahui Wang
DOI:10.1039/d0cc00601g
日期:——
A N2-selective β-selenoalkylation of 1,2,3-triazoles with alkenes mediated by diamines has been developed. The reaction proceeds presumably via the interaction of diamines with both the triazole moiety and selenium/alkene complex to construct a U-shaped reaction intermediate. This activation mode will block the N1 position on triazoles and thus favor the N2-selective selenoamination. This stereospecific