| ψ-esters of depsidones with a lactole ring |
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| 收稿时间： | 1986-06-05 |
ψ-esters of depsidones with a lactole ring |
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| Affiliation: | 1. State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, China;2. Department of Bioengineering, Zhuhai Campus of Zunyi Medical University, Zhuhai 519041, China;3. Beijing Institute for Drug Control, 25 Science Park Road, Changping District, Beijing 102206, China;1. Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India;2. Pharmacology Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India;1. Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;2. Natural Products Research Center of Excellence and Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;3. Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand;4. National Center for Genetic Engineering and Biotechnology (BIOTEC), Thailand Science Park, Klong Luang, Pathumthani 12120, Thailand;5. School of Science, Walailak University, Thasala, Nakhonsithammarat 80161, Thailand;1. Department of Pharmacognosy, School of Pharmacy, Fudan University, Shanghai 201203, PR China;2. School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, PR China |
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| Abstract: | The reaction of stictic, norstictic and salazinic acids with methanol, ethanol and tert-butanol has been investigated. 8′-O-Methylstictic acid is identical with methylstictic acid from Lobaria oregana. Ingolfdottir's vesuvianic acid from Stereocaulon vesuvianum and Handong's cetrariastrumin from Cetrariastrum nepalensis have been shown to be 8′-O-ethylstictic acid and 8′,9′-di-O-ethylsalazinic acid, respectively, by reaction of stictic and salazinic acids with ethanol. |
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