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Azepano-, hydrazido/hydrazono-, and seco-triterpenic derivatives: azepanobetulin 1, tosylate 2, acetohydrazide 3, amides 4–7, 9, azepanouvaol 8, azepanoallobetulin 10, abeo-lupanes 11 and 12, azepanomessagenin 13, azepanoerythrodiol 14, azepano-glycyrrhetinic 15 and 16, hydrazones 17, 19, 20, hydrazide 18, 3-amino-3,4-seco-4(23)-en triterpenic derivatives of uvaol 21, and glycyrrhetol-dien 22
