一族锰配合物[Mn( R peb)(OTf) 2 ] (peb=1-(1-ethyl-1 H -benzo[ d ]imidazol-2-yl)- N -((1-((1-已经合成并表征了衍生自L-脯氨酸的乙基-1 H-苯并[ d ]咪唑-2-基)甲基)吡咯烷-2-基)甲基) -N-甲基甲胺)),其中R是指在二胺骨架。X 射线晶体学分析表明,所有的锰配合物 [Mn( R peb)(OTf) 2 ] 都表现出顺式- α拓扑。这些类型的配合物可以催化烯烃的不对称环氧化,使用 H 2 O 2作为末端氧化剂,ee 高达 96%。显然,二胺骨架的R基团可以影响烯烃不对称环氧化中的催化活性和对映选择性。特别是带有异丙基臂的Mn( i-Pr peb)(OTf) 2不能催化以H 2 O 2作为氧化剂的环氧化反应。然而,当使用PhI(OAc) 2作为氧化剂时,所有的锰配合物包括Mn( i-Pr peb)(OTf)
Asymmetric Intramolecular Aldol Reaction Mediated by (S)-N-Substituted-N-(2-pyrrolidinylmethyl)amine to Prepare Wieland-Miescher Ketone
摘要:
New or known N-substituted-N-(2-pyrrolidinylmethyl)amine derivatives bearing a variety of alkyl and aryl substituents were easily prepared from N-Boc-proline or N'-Boc-N-(2-pyrrolidinylmethyl)amine. The enantioselectivity of the intramolecular asymmetric aldol reaction mediated by a combination of the amine derivative and TFA to prepare Wieland-Miescher ketone was examined. During the examination, optimal amount of TFA in the reaction was identified.
[EN] MEMBRANE-ACTIVE ANTI-BACTERIAL COMPOUNDS AND USES THEREOF<br/>[FR] COMPOSÉS ANTIBACTÉRIENS À MEMBRANE ACTIVE ET LEURS UTILISATIONS
申请人:DARTMOUTH COLLEGE
公开号:WO2021042046A1
公开(公告)日:2021-03-04
In an embodiment, the present disclosure pertains to methods of inhibiting bacterial growth. Generally, the methods include exposing bacteria to an anti-bacterial compound as disclosed herein. In some embodiments, the exposing occurs in vivo in a subject in order to treat or prevent a bacterial infection. In additional embodiments, the present disclosure pertains to anti- bacterial compounds that are suitable for inhibiting bacterial growth.
Various P∗-chiral phosphite-type ligands: their synthesis, stereochemistry and use in Pd-catalysed allylation
作者:Eduard B. Benetsky、Sergey V. Zheglov、Tatiana B. Grishina、Fliur Z. Macaev、Liudmila P. Bet、Vadim A. Davankov、Konstantin N. Gavrilov
DOI:10.1016/j.tetlet.2007.09.125
日期:2007.11
available modular phosphite, phosphoramidite and diamidophosphiteligands with P∗-stereocentres have been prepared from inexpensive optically active precursors. Using these novelligands, up to 91% ee was achieved in Pd-catalysedasymmetric allylic amination. The catalytic performance is affected greatly by the structure of the phosphocentre of the ligand.
[EN] INHIBITORS OF PEPTIDYLARGININE DEIMINASES<br/>[FR] INHIBITEURS DE PEPTIDYLARGININE DÉIMINASES
申请人:[en]GILEAD SCIENCES, INC.
公开号:WO2022140428A2
公开(公告)日:2022-06-30
The present disclosure relates to novel compounds for use in therapeutic treatement of a disease associated with peptidylarginine deiminases (PADs), such as peptidylarginine deiminase type 4 (PAD4). The present disclosure also relates to processes and intermediates for the preparation of such compounds, methods of using such compounds and pharmaceutical compositions comprising the compounds described herein.