Regioselective and Chemoselective Reduction of Naphthols Using Hydrosilane in Methanol: Synthesis of the 5,6,7,8-Tetrahydronaphthol Core
作者:Yuan He、Jinghua Tang、Meiming Luo、Xiaoming Zeng
DOI:10.1021/acs.orglett.8b01273
日期:2018.7.20
A regioselective and chemoselective method for catalytic synthesis of biologically interesting 5,6,7,8-tetrahydronaphthols by reduction of naphthols was described. The side aromatic hydrocarbons in naphthols were site-selectively reduced, using hydrosilanes in methanol, allowing for retaining functional phenol scaffolds intact. It presents a rare example of using low-cost and air-stable hydrosilane
De Novo Synthesis of Phenols and Naphthols through Oxidative Cycloaromatization of Dienynes
作者:Ming-Guang Rong、Tian-Zhu Qin、Xin-Rui Liu、Hong-Fa Wang、Weiwei Zi
DOI:10.1021/acs.orglett.8b02786
日期:2018.10.5
In this work, a rhodium-catalyzed oxidative cycloaromatization of dienynes, which provides a highly straightforward and efficient way to access polysubstituted naphthols and phenols under mild conditions, is described. Challenged electron-withdrawing groups are well tolerated in this protocol, and late-stage phenyl ring formation is demonstrated.
Annelation of Baylis–Hillman Derivatives: Synthesis of Highly Functionalised Tetrahydronaphthalenes
作者:Asma J'mour、Farhat Rezgui
DOI:10.3184/030823409x12532103537360
日期:2009.10
PTSA-promoted Robinson annelation of α-(3-oxobutyl)cyclohex-2-en-1-one derivatives in refluxing toluene, affords efficiently in a one pot process a variety of hydroxytetrahydronaphthyl carbonyl compounds in good yields. Further highly regioselective electrophilic bromination of these intermediates gave the corresponding bromide derivatives in 92–97% yield.
2-Aminomethyl phenol derivative and process for preparing thereof
申请人:Ono Pharmaceutical Co., Ltd.
公开号:US04254056A1
公开(公告)日:1981-03-03
A 2-aminomethyl phenol derivative of the formula (I): ##STR1## wherein X is a halogen atom; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 which may be the same or different are each a hydrogen atom or a straight or branched chain alkyl group having 1 to 4 carbon atoms; n is 2, 3, 4 or 5 and a pharmaceutically acceptable acid addition salt thereof are disclosed. Also disclosed is a process for preparing such derivative or a pharmaceutically acceptable acid addition salt thereof.
Novel amino dicarboxylic acid derivatives with pharmaceutical properties
申请人:——
公开号:US20040082798A1
公开(公告)日:2004-04-29
The invention relates to the use of compounds of formula (I) and of their salts and stereoisomers for producing medicaments used in the treatment of cardiovascular diseases.
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