Et<sub>3</sub>SiH + KO<sup>t</sup>Bu provide multiple reactive intermediates that compete in the reactions and rearrangements of benzylnitriles and indolenines
作者:Andrew J. Smith、Daniela Dimitrova、Jude N. Arokianathar、Kenneth F. Clark、Darren L. Poole、Stuart G. Leach、John A. Murphy
DOI:10.1039/d0sc04244g
日期:——
unusual because it generates multiple different types of reactive intermediates simultaneously that provide access to (i) silyl radical reactions, (ii) hydrogen atom transferreactions to closed shell molecules and to radicals, (iii) electron transfer reductions and (iv) hydride ion chemistry, giving scope for unprecedented outcomes. Until now, reactions with this reagent pair have generally been explained
Compounds of formula (I):
1
and their salts, solvates, prodrugs, etc., wherein the substituents have the values mentioned herein, are bombesin antagonists, which have utility in a variety of therapeutic areas including male and female sexual dysfunction, particularly female sexual dysfunction (FSD) especially wherein the FSD is female sexual arousal disorder (FSAD) and male erectile dysfunction (MED)
Cyclohexylcarbonitriles: Diastereoselective Arylations with TMPZnCl·LiCl
作者:Robert J. Mycka、Stéphanie Duez、Sebastian Bernhardt、Johannes Heppekausen、Paul Knochel、Fraser F. Fleming
DOI:10.1021/jo301127n
日期:2012.9.7
Deprotonating substituted cyclohexanecarbonitriles with TMPZnCl center dot LiCl affords zincated nitriles that diastereoselectively couple with aryl bromides in the presence of catalytic Pd(OAc)(2), and S-Phos. Steric and electronic effects influence the diastereoselectivity; 4-t-butyl-, 4-TBSO-, and 2-Me-cyclohexanecarbonitriles exert virtually complete diastereocontrol whereas modest diastereoselectivity is observed with 4-i-Pr-, 4-Me-, and 3-Me-cyclohexanecarbonitriles. The unusual diastereoselectivity trends should prove useful for synthesizing substituted cyclohexanecarbonitrile-containing pharmaceuticals.
BOMBESIN ANTAGONISTS
申请人:Warner-Lambert Company LLC
公开号:EP1501800A1
公开(公告)日:2005-02-02
[EN] PYRIMIDINEDIONE DERIVATIVES USEFUL AS ALPHA 1A ADRENOCEPTOR ANTAGONISTS<br/>[FR] DERIVES DE LA PYRIMIDINEDIONE, ANTAGONISTES DE L'ADRENOCEPTEUR ALPHA 1A
申请人:MERCK & CO INC
公开号:WO2000029386A1
公开(公告)日:2000-05-25
Novel pyrimidinedione compounds and pharmaceutically acceptable salts thereof are disclosed. The synthesis of these compounds and their use as alpha 1a adrenergic receptor antagonists is also described. One application of these compounds is in the treatment of benign prostatic hyperplasia. These compounds are selective in their ability to relax smooth muscle tissue enriched in the alpha 1a receptor subtype without at the same time inducing hypotension. One such tissue is found surrounding the urethral lining. Therefore, one utility of the instant compounds is to provide acute relief to males suffering from benign prostatic hyperplasia, by permitting less hindered urine flow. Another utility of the instant compounds is provided by combination with a human 5-alpha reductase inhibitory compound, such that both acute and chronic relief from the effects of benign prostatic hyperplasia can be achieved.