Synthesis and pharmacology of 1-deoxy analogs of CP-47,497 and CP-55,940
摘要:
A series of 1-deoxy analogs of CP-47,497 (8 and 13, n = 0-7) and 1-deoxy analogs of CP-55,940 (9, n = 0-7) have been synthesized and their affinities for the cannabinoid CB1 and CB2 receptors have been determined. Although the majority of these compounds exhibit selectivity for the CB2 receptor, none have greater than modest affinity for either receptor. The interactions of these 1-deoxy nontraditional cannabinoids with the CB2 receptor are discussed. (c) 2007 Elsevier Ltd. All rights reserved.
A mild and efficient one-pot visible light-induced method has been developed for the allylic oxidation. The oxidation of allylic systems has played a prominent role in this context as possibly the most widely applied C-H functionalization, owing to the utility of enones. The allylic C-H oxidation is relatively simple and predictable, even on a preparative scale, because active species generated at the allylic position are stabilized by the double bond.
Selective arylation at the vinylic site of cyclic olefins
作者:Xiaojin Wu、Jianrong (Steve) Zhou
DOI:10.1039/c3cc41722k
日期:——
Cyclicolefins usually give Heck products having an aryl ring residing at the allylic or homoallylic position. We describe herein a new method that allows arylation at the vinylic position of various cyclicolefins.
Continuous-Flow Synthesis of <i>meta</i>-Substituted Phenol Derivatives
作者:Jeong Hyeon Park、Chan Yi Park、Mi Jin Kim、Min Uk Kim、Young Joon Kim、Geon-Hee Kim、Chan Pil Park
DOI:10.1021/acs.oprd.5b00077
日期:2015.7.17
complementary microreactor technologies were developed for the study of biphasic gas–liquid reactions and preparation of meta-substituted phenol derivatives. The first capillary microreactor, composed of a T-junction and simple capillary, enabled oxidative Heck/dehydrogenation on a microgram scale with a shortened reaction time; the total sequence time for oxidative Heck/dehydrogenation reactions was optimized
Aerobic Oxidative Heck/Dehydrogenation Reactions of Cyclohexenones: Efficient Access to<i>meta</i>-Substituted Phenols
作者:Yusuke Izawa、Changwu Zheng、Shannon S. Stahl
DOI:10.1002/anie.201209457
日期:2013.3.25
catalyst, employing a 6,6′‐dimethyl‐2,2′‐bipyridine ligand, promotes both the aerobic oxidative Heck coupling and dehydrogenation reactions of cyclohexenones. These reactions may be combined in a one‐pot sequence to enable the straightforward synthesis of meta‐substituted phenols (see scheme).
Copper/Selectfluor-System-Catalyzed Dehydration-Oxidation of Tertiary Cycloalcohols: Access to β-Substituted Cyclohex-2-enones, 4-Arylcoumarins, and Biaryls
作者:Shaobo Ren、Jian Zhang、Jiahui Zhang、Heng Wang、Wei Zhang、Yunkui Liu、Miaochang Liu
DOI:10.1002/ejoc.201500610
日期:2015.8
A route to β-substitutedcyclohex-2-enones, 4-arylcoumarins, and biaryls has been developed. This approach involves a one-pot Cu0/Selectfluor-catalyzed dehydration–oxidation of tertiary cycloalcohols. Thus, by using 2 equiv. of Selectfluor at 25 °C, the dehydration–oxidation of tertiary cyclohexanols and oxabenzocyclohexanols gave β-substitutedcyclohex-2-enones and 4-arylcoumarins, respectively; whereas
enantioselective asymmetric hydrogenation of cyclic dienamides catalyzed by an Rh-DuanPhos complex has been developed, which provides a readilyaccessible method for the synthesis of chiral cyclic allylic amines in excellent enantioselectivities (up to 99% ee). The products are valuable chiralbuildingblocks and could be easily transformed to multisubstituted cyclohexane derivatives.