De­acetyl­cinobufalactam monohydrate

The title compound, C₂₄H₃₃NO₄·H₂O, the reaction product of de­acetyl­cinobufagin with ammonium acetate, consists of three cyclo­hexane rings (A, B and C), one five-membered ring (D), one six-membered lactone ring (E) and an epoxide ring (F). The stereochemistry of the ring junctures are A/B cis, B/C trans, C/D cis and D/F cis. Cyclo­hexane rings A, B and C have normal chair conformations. The five-membered ring D adopts an envelope conformation (with the C atom bearing the lactone ring as the flap) and the lactone ring E is planar. In the crystal, hy­droxy and water O—H...O and amine N—H...O hydrogen bonds involving carbonyl, hy­droxy and water O-atom acceptors link the mol­ecules into a three-dimensional network.

1-Deacet­oxy-1-oxocaesalmin

The title compound, C₂₄H₃₀O₇, is a diterpenoid isolated from the seeds of Caesalpinia minax. It consists of two cyclo­hexane rings (A and B), one unsaturated six-membered ring (C) and one furan ring (D). The stereochemistry of the ring junctures is A/B trans and B/C trans. Rings A and B have normal chair conformations while C adopts a twisted half-chair conformation due to fusion to the furan ring which is planar [r.m.s. deviation = 0.0009 (2) Å]. In the crystal, hydroxyl O—H...O_carbon­yl hydrogen bonds link the mol­ecules into a chain structure extending along the a-axis direction.