Antibiotic substance found in the mycelium of Penicillium griseofulvum: Anslow, Raistrick, Biochem. J. 25, 39 (1931); Oxford et al., ibid. 29, 1102 (1935); 33, 240 (1939); Oxford, Raistrick, ibid. 42, 323 (1948). Structure: Birch et al., J. Chem. Soc. 1956, 3717; Bates, Schauble, Tetrahedron Lett. 1963, 1683. Configuration: Gallina et al., Gazz. Chim. Ital. 94, 1301 (1964). Partial synthesis: Brown, Meehan, Aust. J. Chem. 21, 1581 (1968). Total synthesis: N. Shinmon et al., Chem. Commun. 1980, 1020.