209. Albaspidin
Nomenclature
CAS number: 58409-52-2
2,2′-Methylenebis[6-butyryl-3,5-dihydroxy-4,4-dimethyl-2,5-cyclohexadien-1-one]; polystichalbin; methylenebis(butyrylfilicinic acid); albaspidin-BB. C25H32O8; mol wt 460.52.
C 65.20%, H 7.00%, O 27.79%.
Description and references
Found in the rhizomes of the male fern, Aspidium filix mas (L.) Schott., Dryopteris filix mas (L.) Schott., A. spinulosum, Polypodiaceae and other ferns. Isoln from Aspidium extract: Boehm, Ann. 318, 305 (1901); McGookin et al., J. Chem. Soc. 1953, 1828; see also Tryon et al., Phytochemistry 12, 683 (1973). Isoln as one component of a homologous mixture: Penttila, Sundman, Acta Chem. Scand. 18, 344 (1964). Synthesis: Riedl, Mitteldorf, Ber. 89, 2595 (1956); Inagaki et al., J. Pharm. Soc. Jpn. 76, 1258 (1956). Biosynthetic studies: Penttila, Fales, J. Am. Chem. Soc. 88, 2327 (1966).
