Abstract

β-Tubanol methylether (IIb) was obtained by the Grignard reaction from methyl magnesium iodide and 5-methoxy-coumarin in boiling benzene. The preparation of 2-methyl-4-(2'-hydroxy-6'-methoxyphenyl)-buten-3-ol-2 (VI) and 2, 2-dimethyl-7-methoxy-chromene-3 (IId) were also described.

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