A novel compound represented by the following general formula (1), or a salt thereof, which has a superior EP
4
receptor agonist activity, and a medicament containing the compound or a salt thereof as an active ingredient, which can be used for promotion of osteogenesis, therapeutic treatment and/or promotion of healing of fracture and the like.
Synthesis of Polysubstituted 2‐Naphthols by Palladium‐Catalyzed Intramolecular Arylation/Aromatization Cascade
作者:Jinhui Cai、Zhen‐Kai Wang、Yun‐Hao Zhang、Fei Yao、Xu‐Dong Hu、Wen‐Bo Liu
DOI:10.1002/adsc.201901573
日期:2020.3.17
A palladium‐catalyzed intramolecular α‐arylation and defluorinative aromatization strategy for the synthesis of polysubstituted 2‐naphthols is reported. With ortho‐bromobenzyl‐substituted α‐fluoroketones as the substrates and palladium acetate/triphenylphosphine as the catalyst, this method features good functional group tolerance, readily available catalyst and starting materials, and high yields
报道了钯催化的分子内α-芳基化和脱氟芳构化策略,用于合成多取代的2-萘酚。该方法以邻溴苄基取代的α-氟酮为底物,并以乙酸钯/三苯膦为催化剂,具有良好的官能团耐受性,易于获得的催化剂和起始原料以及高收率的特点。该策略的应用通过合成有用的结构单元(例如,石脑油[2,3- b ]呋喃,萘酚AS-D和配体/催化剂)得到证明。
Cyclisations intramoléculaires: Accés aux 9-oxo-4<i>H</i>,9<i>H</i>-pyrrolo[1,2-<i>a</i>]thieno[2,3-<i>d</i>]pyridine et 4-oxo-4<i>H</i>,9<i>H</i>-pyrrolo[1,2-<i>a</i>]thieno[2,3-<i>d</i>]pyridine. Synthèse des pyrrolo[1,2-<i>a</i>]thieno[3,2-<i>e</i>][1,4]diazepine et pyrrolo[1,2-<i>a</i>]thieno[2,3-<i>e</i>][1,4]diazepine
作者:Bernard Decroix、Jean Morel
DOI:10.1002/jhet.5570280115
日期:1991.1
phenes. La cyclisation intramoléculaire des acides 19 et 20 fournit les pyrrolothienopyridines 22 et 23. D'autre part les azotures 29 et 30 en milieu acide conduisent aux pyrrolo[1,2-a]thieno[3,2-e][1,4]diazepine et pyrrolo[1,2-a]thieno[2,3-e][1,4]diazepine.
Cross-Coupling Strategy for the Synthesis of Diazocines
作者:Shuo Li、Nadi Eleya、Anne Staubitz
DOI:10.1021/acs.orglett.0c00122
日期:2020.2.21
Ethylene bridged azobenzenes are novel, promising molecular switches that are thermodynamically more stable in the (Z) than in the (E) configuration, contrary to the linear azobenzene. However, their previous synthetic routes were often not general, and yields were poorly reproducible, and sometimes very low. Here we present a new synthetic strategy that is both versatile and reliable. Starting from
Synthesis of Optically Active Condensed Tetrahydropyridines from α-Amino Esters
作者:Jürgen Liebscher、Heike Faltz、Christoph Bender
DOI:10.1055/s-2006-950192
日期:2006.9
condensed dihydropyridones 6 could be synthesized from a-amino esters 2 or 3 and o-bromobenzyl bromides or heterocyclic analogues 1. These products resemble isoquinoline and β-carboline alkaloid structures and could be stereoselectively transformed into condensed 4-hydroxytetrahydropyridines 7 and 8 by reaction with Grignard reagents or reduction. Treatment of condensed 4-allyl or 4-homoallyl-4-hydroxypyridines