Six new diterpenes, 12-hydroxy-20-nor-abieta-1(10),2,8,11,13-pentaene, pisiferanol (1 OS, 12dihydroxy-9(10 + 20)-abeo-abieta-8,11,13-triene), pisiferadinol(20Shydroxypisiferanol), lZdeoxypisiferanol,l/?-hydroxyisopisiferin (lR,12-dihydroxy-9(10 + 20~abeoabieta-8,10(20),11,13-tetraene), and the dimethylamine salt of O-methylpisiferic acid were isolated from the seed of Chumaecypuris pisifera. The structures of these diterpenes were established by spectral and chemical methods. In addition, 15 mono-, four sesqui- and nine diterpenes were identified.