HFIP Solvent Enables Alcohols To Act as Alkylating Agents in Stereoselective Heterocyclization
作者:Yuxiang Zhu、Ignacio Colomer、Amber L. Thompson、Timothy J. Donohoe
DOI:10.1021/jacs.9b02198
日期:2019.4.24
method for the stereoselective synthesis of highly functionalized oxygen heterocycles using allyl or benzyl alcohols as alkylating agents is presented. The process is efficient and atom economic, generating water as the only stoichiometric byproduct. Substoichiometric amounts of Ti(OiPr)4 in HFIP solvent are key to this reactivity, and the method tolerates a broad substitution pattern on both the alcohol
Described are diaminopropanols of which are orally active and bind to renin to inhibit its activity. They are useful in the treatment or amelioration of diseases associated with elevated. levels of renin activity or in the treatment of aspartic protease mediated disorders. Also described is a method for the use of the diaminopropanols in ameliorating or treating renin related disorders in a subject in need thereof.
Described are diaminopropanols of which are orally active and bind to renin to inhibit its activity. They are useful in the treatment or amelioration of diseases associated with elevated levels of renin activity or in the treatment of aspartic protease mediated disorders. Also described is a method for the use of the diaminopropanols in ameliorating or treating renin related disorders in a subject in need thereof.
Complexity-Building Photoinduced Cascade Involving C<sub>sp<sup>2</sup></sub>–C<sub>sp<sup>3</sup></sub> Coupling of Aromatic Amides via [2 + 2] Reactivity of ESIPT-Generated <i>o-</i>Azaxylylenes
作者:D. Sai Reddy、Ivan M. Novitskiy、Andrei G. Kutateladze
DOI:10.1021/acs.orglett.3c00092
日期:2023.2.24
A new mode for complexity-building photochemical cascades which offers experimentally simple transition metal-free intramolecular Csp2–Csp3 crosscoupling of aromaticamides is attained via an unprecedented [2 + 2] reactivity of ESIPT-generated azaxylylenes. Coupled with short and straightforward postphotochemical modifications of the primary photoproducts, these cascades allow for a significant step-normalized
Substrate-Directed Enantioselective Aziridination of Alkenyl Alcohols Controlled by a Chiral Cation
作者:Alexander Fanourakis、Nicholas J. Hodson、Arthur R. Lit、Robert J. Phipps
DOI:10.1021/jacs.3c00693
日期:——
Alkeneaziridination is a highly versatile transformation for the construction of chiral nitrogen-containing compounds. Inspired by the success of analogous substrate-directed epoxidations, we report an enantioselective aziridination of alkenyl alcohols, which enables asymmetric nitrene transfer to alkenes with varied substitution patterns, including those not covered by the current protocols. We believe