title: 13-Hydr-oxy-4,16-dimethyl-4,16-diaza-penta-cyclo-[12.3.1.0.0.0]octa-deca-7(12),8,10-triene-6,18-dione.
abstract: In the title compound, C(18)H(20)N(2)O(3), the N-methyl-piperidone ring adopts a chair conformation. The pyrrolidine ring and the five-membered cyclo-pentane rings adopt envelope conformations. The five-membered ring of the ninhydrin system adopts an envelope conformation with the central C atom deviating by 0.217 (1)Å from the mean plane through the other atoms. The mol-ecular packing is characterized by inter-molecular C-H⋯O and intra-molecular C-H⋯O and O-H⋯N inter-actions.
authors.forename: J
authors.initials: J
authors.lastname: Suresh
authors.forename: K
authors.initials: K
authors.lastname: Gurunathan
authors.forename: R Suresh
authors.initials: RS
authors.lastname: Kumar
authors.forename: S
authors.initials: S
authors.lastname: Perumal
authors.forename: P L Nilantha
authors.initials: PL
authors.lastname: Lakshman