The Preparation of α-Alkylidene-γ-Butyrolactones Using a Telescoped Intramolecular Michael/Olefination (TIMO) Sequence: Synthesis of (+)-Paeonilactone B
作者:Michael G. Edwards、Martin N. Kenworthy、Russell R. A. Kitson、Alexis Perry、Mark S. Scott、Adrian C. Whitwood、Richard J. K. Taylor
DOI:10.1002/ejoc.200800558
日期:2008.10
A novel telescopedintramolecularMichael addition/proton transfer/HWE olefination sequence has been developed to provide rapid access to α-alkylidene-γ-butyrolactones. This methodology has been applied to prepare a range of tetrahydrobenzofuran-2,5-diones, and related systems, and also utilised in an extremely short synthesis of the natural product (+)-paeonilactoneB in enantiomerically pure form
A new stereoselective synthesis of paeonilactone B has been achieved in ten steps and in 11.5% overall yield starting from the enantiomerically enriched terpenol 2. Key synthetic steps are based on a regioselective metalation and on a regio- and diastereoselective epoxidation.
从对映体富集的萜醇 2 开始,经过 10 个步骤实现了芍药内酯 B 的新立体选择性合成,总产率为 11.5%。关键合成步骤基于区域选择性金属化以及区域和非对映选择性环氧化。
USE OF ALBIFLORIN FOR ANTI-DEPRESSION
申请人:Zhang Zuoguang
公开号:US20120270820A1
公开(公告)日:2012-10-25
A pharmaceutical composition containing albiflorin and use thereof in manufacturing medicaments for preventing and treating depression are provided by the present invention.
本发明提供了一种含有白花丹苷的药物组合物,并将其用于制造预防和治疗抑郁症的药物。
ANTIANXIETY AND SLEEP DISORDER IMPROVING USE OF ALBIFLORIN OR METABOLITE THEREOF IN
申请人:Zhang, Zuoguang
公开号:EP2644198A1
公开(公告)日:2013-10-02
Disclosed is a use of albiflorin or a metabolite thereof in preparation of antianxiety and sleep disorder improving drugs or health-care food. Tests prove that albiflorin has significant antianxiety effects and sleep disorder improving effects achieved by prolonging SWS and low the toxic side effects, thus being a safety monomer compound capable of effectively treating anxiety and sleep disorder.
USE OF ALBIFLORIN OR PHARMACEUTICALLY ACCEPTABLE SALT FOR PREVENTION AND/OR TREATMENT OF IRRITABLE BOWEL SYNDROME
申请人:Zhang, Zuoguang
公开号:EP3263114A1
公开(公告)日:2018-01-03
Disclosed is a use of albiflorin or a pharmaceutically acceptable salt for the prevention and/or treatment of irritable bowel syndrome. The experimental results demonstrate that the prevention, remission and/or treatment of irritable bowel syndrome with albiflorin or a pharmaceutically acceptable salt has significant effects and few side effects. This is a preparation derived from a natural plant for the safe, effective and multi-targeted prevention, remission and/or treatment of irritable bowel syndrome.