[Oxidized NADPH---hemoprotein reductase]
Farnesyl pyrophosphate → Sesquiterpenoid
Squalene → Chair-chair-chair-chair Triterpenoid
Hydrogen Ion + NADPH + Presqualene diphosphate → NADP + Pyrophosphate + Squalene
2 Farnesyl pyrophosphate → Presqualene diphosphate + Pyrophosphate
(S)-2,3-Epoxysqualene → α-seco-amyrin
(S)-2,3-Epoxysqualene + Water → Lupan-3β,20-diol
(S)-2,3-Epoxysqualene + Water → Arabidiol
(S)-2,3-Epoxysqualene → Camelliol C
(S)-2,3-Epoxysqualene → Tirucalla-7,24-dien-3β-ol
(S)-2,3-Epoxysqualene → β-seco-amyrin
Oxygen + Squalene + [Reduced NADPH---hemoprotein reductase] → (S)-2,3-Epoxysqualene + Water + [Oxidized NADPH---hemoprotein reductase]