stemar-13-ene synthase activity
Catalysis of the reaction: 9-alpha-copalyl diphosphate = stemar-13-ene + diphosphate.
GO:0016838
carbon-oxygen lyase activity, acting on phosphates
is_a
9alpha-copalyl-diphosphate diphosphate-lyase (stemar-13-ene-forming) activity
exact