Fluorinated 9H-xanthene-9-carboxylic acid oxazol-2-yl-amides as potent, orally available mGlu1 receptor enhancers
摘要:
Small molecule mGluR1 enhancers, which are 9H-xanthene-9-carboxylic acid [ 1,2,4] oxadiazol-3-yl- and (2H-tetrazol-5-yl)-amides, have been previously reported. Fluorinated 9H-xanthene-9-carboxylic acid oxazol-2-yl-amides with improved pharmacokinetic properties have been designed and synthesized as useful pharmacological tools for the study of the physiological roles mediated by mGlu1 receptors. The synthesis and the structure-activity relationship of this class of positive allosteric modulators of mGlu1 receptors will be discussed in detail. (C) 2009 Elsevier Ltd. All rights reserved.
Rh-catalyzed direct synthesis of 2,2′-dihydroxybenzophenones and xanthones
作者:Maddali L. N. Rao、Boddu S. Ramakrishna
DOI:10.1039/c6ra18647e
日期:——
An efficient rhodium-catalyzed direct synthesis of 2,2′-dihydroxybenzophenones and xanthones was developed from functionalized salicylaldehydes. This approach provides an easy access to various functionalized 2,2′-dihydroxybenzophenone and xanthone core skeletons. This study also revealed the crucial role of the hydroxy group in the reductive homo-coupling process to generate 2,2′-dihydroxybenzophenones
Spirotricyclic substituted azacycloalkane derivatives and uses thereof
申请人:Merck & Co., Inc.
公开号:US06387893B1
公开(公告)日:2002-05-14
Spirotricyclic azacycloalkyl compounds and pharmaceutically acceptable salts thereof are disclosed. The synthesis of these compounds is also described. One application of these compounds, which are alpha 1a adrenergic receptor antagonists, 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.
Palladium-Catalyzed Carbonylative Homocoupling of 2-Iodophenols for the Synthesis of Symmetrical Xanthones
作者:Bhalchandra M. Bhanage、Manjunath S. Lokolkar
DOI:10.1055/a-2123-9288
日期:2023.12
report the palladium-catalyzed carbonylative synthesis of symmetrical xanthones from functionalized 2-iodophenols in a one-pot manner. The protocol involves homocoupling of 2-iodophenols using Pd catalyst, Cs2CO3 as base, with gaseous CO as C1 building block. The simple, ligand- and additive-free strategy provides moderate to good yields of symmetrical xanthones. The reaction was also examined with the
在此,我们报道了钯催化一锅法从功能化 2-碘酚羰基化合成对称呫吨酮。该方案涉及使用 Pd 催化剂、Cs 2 CO 3作为碱、以气态 CO 作为 C1 结构单元对 2-碘酚进行自偶联。这种简单、无配体和添加剂的策略提供了中等至良好的对称呫吨酮产率。还用 2-羟基苯基硼酸作为另一种偶联配偶体的组合来检查该反应。此外,通过改变反应条件,该方案被扩展用于芳基和烷基水杨酸酯衍生物的合成。
GRANOTH I.; GRADOVSKI L.; ALKABETS R., J. ORG. CHEM. <JOCE-AH>, 1975, 40, NO 16, 2304-2307