Major component of the alicyclic fraction of shellac hydrolysate of which it usually constitutes 5-8%. Isoln: Harries, Nagel, Ber. 55, 3833 (1922); Nagel, Mertens, ibid. 70, 2173 (1937); Kirk et al., J. Am. Chem. Soc. 63, 1243 (1941). Structure studies: Carruthers et al., J. Chem. Soc. 1961, 5251; Cookson et al., Tetrahedron 18, 547, 1321 (1962); Yates, Field, ibid. 26, 3135 (1970). Stereochemistry: Yates et al., ibid. 26, 3159 (1970).