90618-63-6Relevant articles and documents
Regiospecific (Biogenetic-type) Synthesis of 2-Methyl-5H-pyranobenzopyran-4-one, the Basic Skeleton in Citromycetin
Watanabe, Toshio,Katayama, Sadamu,Nakashita, Yoshihiko,Yamauchi, Masashige
, p. 761 - 762 (1981)
Regiospecific cyclization of the acetal (4g), derived in 5 steps from 2'-benzyloxyacetophenone (3a), gave the pyrone (6a) which was easily converted into 2-methyl-5H-pyranobenzopyran-4-one (1b), the basic skeleton in citromycetin (1a).