Oxidation of Oxazolines and Thiazolines to Oxazoles and Thiazoles. Application of the Kharasch−Sosnovsky Reaction
作者:A. I. Meyers、Francis X. Tavares
DOI:10.1021/jo9613491
日期:1996.11.15
Kharasch-Sosnovsky reaction, the oxidation of oxazolines and thiazolines bearing a variety of 2-alkyl substituents (chiral and achiral) were smoothly oxidized to their corresponding oxazoles and thiazoles, respectively. The key feature involved in the successful implementation of this important oxidation was the use of a mixture of Cu(I) and Cu(II) salts to enhance the oxidation of the intermediate captodative
Synthesis of 1-substituted 2,9,10-trioxatricyclo[4.3.1.03,8]decanes
作者:Elena Stanoeva、Weidong He、Maria Teresa Rocchetti、Tuyen Nguyen Van、Norbert De Kimpe
DOI:10.1016/j.tet.2004.04.016
日期:2004.5
A series of 1-alkyl- and 1-alkenyl-2,9,10-trioxatricyclo[4.3.1.03,8]decanes, models for the core orthoester structural moiety of resiniferatoxin and synaptolepis factors, was prepared by a transetherification reaction of (±)-all-cis-cyclohexane-1,2,4-triol and trimethyl orthocarboxylates. The synthesis of the starting trimethyl orthocarboxylates is also given in detail.
[EN] PARTICLES, COMPOSITIONS, AND METHODS FOR OPHTHALMIC AND/OR OTHER APPLICATIONS<br/>[FR] PARTICULES, COMPOSITIONS ET PROCÉDÉS POUR APPLICATIONS OPHTALMIQUES ET/OU AUTRES APPLICATIONS
申请人:KALA PHARMACEUTICALS INC
公开号:WO2019055028A1
公开(公告)日:2019-03-21
This disclosure relates to particles, compositions, and methods that aid particle transport in mucus are provided. The particles, compositions, and methods may be used, in some instances, for ophthalmic and/or other applications.
Visible-Light-Mediated Remote γ-C(sp<sup>3</sup>)–H Functionalization of Alkylimidates: Synthesis of 4-Iodo-3,4-dihydropyrrole Derivatives
作者:Yogesh Kumar、Yogesh Jaiswal、Amit Kumar
DOI:10.1021/acs.orglett.8b02022
日期:2018.8.17
dihydropyrrole derivatives is reported. The developed protocol proceeds via chemoselective intramolecular N–C bond formation of alkylimidates through 1,5-hydrogen atom transfer from in situ generated imidate N-radicals. The major advantage of this designed strategy lies in the choice of starting materials, mild reaction conditions, high chemo- and diastereoselectivity, clean source of energy, and good functional
Chemoenzymatic Synthesis of a Series of 4-Substituted Glutamate Analogues and Pharmacological Characterization at Human Glutamate Transporters Subtypes 1−3
作者:Sebastien Alaux、Mie Kusk、Emanuelle Sagot、Jean Bolte、Anders A. Jensen、Hans Bräuner-Osborne、Thierry Gefflaut、Lennart Bunch
DOI:10.1021/jm050597z
日期:2005.12.1
4-syn-4-alkylglutamic acid analogues (1a-i) were synthesized in high yield and high enantiomeric excess (>99% ee) from their corresponding 4-substituted ketoglutaric acids (2a-i), using the enzyme aspartate aminotransferase (AAT) from pig heart or E. coli. The synthesized compounds were evaluated as potential ligands for the glutamate transportersEAAT1, EAAT2, and EAAT3 (excitatoryaminoacidtransporter, subtypes