期刊
TETRAHEDRON LETTERS
卷 41, 期 4, 页码 465-469出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(99)02005-5
关键词
antibiotics; biomimetic reactions; coupling reactions; cyclization; spiro compounds
An efficient synthesis of (+/-)-geodin [(+/-)-2] corresponding to the spirocoumaranone subunit of Sch 202596 (1) was accomplished in a convergent manner by utilizing coupling reaction of the aryl aldehyde 5 with the aryl bromide 6 and oxidative spirocyclization of the benzophenone 4 as the key steps. The aromatic segments 5 and 6 were prepared from commercially available methyl 3,5-dihydroxybenzoate (7) and 5-methylresorcinol (8), respectively. (C) 2000 Elsevier Science Ltd. All rights reserved.
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