Asymmetric Formal Carbonyl-Ene Reactions of Formaldehyde <i>tert</i>-Butyl Hydrazone with α-Keto Esters: Dual Activation by Bis-urea Catalysts
作者:Ana Crespo-Peña、David Monge、Eloísa Martín-Zamora、Eleuterio Álvarez、Rosario Fernández、José M. Lassaletta
DOI:10.1021/ja305209w
日期:2012.8.8
The dual activation of α-ketoesters and formaldehyde tert-butyl hydrazone by BINAM-derived bis-ureas is the key to achieve high reactivity and excellent enantioselectivities in nucleophilicaddition (formal carbonyl-ene reaction) to functionalized tertiary carbinols. Ensuing high-yielding diazene-to-aldehyde tranformations and subsequent derivatizations provides a direct entry to a variety of densely
PYRROLIDINE-FUSED THIADIAZINE DIOXIDE COMPOUNDS AS BACE INHIBITORS, COMPOSITIONS, AND THEIR USE
申请人:Stamford Andrew W.
公开号:US20140023667A1
公开(公告)日:2014-01-23
In its many embodiments, the present invention provides certain iminothiadiazine dioxide compounds, including compounds Formula (I): and tautomers and stereoisomers thereof, and pharmaceutically acceptable salts of said compounds, said tautomeros and said stereoisomers, wherein each of W, Z, R
1H
, R
2
, R
3
, R
4
, ring A, ring B, m, n, p, and -L
1
- is as defined herein. The novel compounds of the invention have surprisingly been found to exhibit properties which are expected to render them advantageous as BACE inhibitors and/or for the treatment and prevention of various pathologies related thereto. Pharmaceutical compositions comprising one or more such compounds (alone and in combination with one or more other active agents), and methods for their preparation and use, including Alzheimer's disease, are also disclosed.
US9145426B2
申请人:——
公开号:US9145426B2
公开(公告)日:2015-09-29
US9580444B2
申请人:——
公开号:US9580444B2
公开(公告)日:2017-02-28
[EN] POLYCYCLIC PYRAZOLINONE DERIVATIVE AND HERBICIDE COMPRISING SAME AS EFFECTIVE COMPONENT THEREOF<br/>[FR] DÉRIVÉ DE PYRAZOLINONE POLYCYCLIQUE ET HERBICIDE LE COMPRENANT À TITRE DE PRINCIPE ACTIF