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.
Asymmetric Intramolecular Aldol Reaction Mediated by (S)-N-Substituted-N-(2-pyrrolidinylmethyl)amine to Prepare Wieland-Miescher Ketone
作者:Kohei Inomata、Yuichi Akahane、Yasuyuki Endo
DOI:10.3987/com-10-s(e)119
日期:——
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.
Asymmetric Epoxidation of Olefins Catalyzed by Substituted Aminobenzimidazole Manganese Complexes Derived from
<i>L</i>
‐Proline
作者:Jing Tian、Jin Lin、Jisheng Zhang、Chungu Xia、Wei Sun
DOI:10.1002/adsc.202101151
日期:2022.2
asymmetric epoxidation of olefins employing H2O2 as a terminal oxidant with up to 96% ee. Obviously, the R group of the diamine backbone can influence the catalytic activity and enantioselectivity in the asymmetric epoxidation of olefins. In particular, Mn(i-Prpeb)(OTf)2 bearing an isopropyl arm, cannot catalyze the epoxidation reaction with H2O2 as the oxidant. However, when PhI(OAc)2 is used as the oxidant
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)