Enzyme of the diterpenoid metabolism involved in the biosynthesis of both phytocassane and the oryzalexin class of phytoalexins. Can hydroxylate syn-pimaradiene, ent-pimaradiene, ent-sandaracopimaradiene, ent-isokaurene, ent-kaurene, and ent-cassadiene, but no activity with syn-stemodene, syn-stemarene, syn-labdatriene, C11-alpha-hydroxy-ent-cassadiene or syn-pimadien-19-oic acid as substrates. Hydroxylates 3-alpha-hydroxy-ent-sandaracopimaradiene at C-7-beta, resulting in a 3-alpha,7-beta-diol corresponding to oryzalexins D. ent-cassa-12,15-diene + O2 + reduced [NADPH--hemoprotein reductase] = ent-11beta-hydroxycassa-12,15-diene + H(+) + H2O + oxidized [NADPH--hemoprotein reductase] ent-sandaracopimaradien-3beta-ol + O2 + reduced [NADPH--hemoprotein reductase] = H(+) + H2O + oryzalexin D + oxidized [NADPH--hemoprotein reductase] kcat is 0.011 sec(-1) with ent-sandaracopimaradien as substrate. kcat is 0.009 sec(-1) with ent-pimaradiene as substrate. kcat is 0.015 sec(-1) with ent-isokaurene as substrate. kcat is 0.006 sec(-1) with ent-cassadiene as substrate. kcat is 0.009 sec(-1) with ent-kaurene as substrate. kcat is 0.006 sec(-1) with syn-pimaradiene as substrate. Up-regulated by methyl jasmonate. Belongs to the cytochrome P450 family.