“…On the other hand, epoxidation of the corresponding dihydroxy derivatives yields compounds exhibiting strong carcinogenic properties. BS were shown to affect the monooxygenase activity of liver microsomes [128][129][130]. A strong inhibitory effect of BS on benzo(a)pyrene oxidation was observed for (22S,23S)-homobrassinolide 3 and (22S,23S)-homocastasterone 5.…”