1.
Z Naturforsch C J Biosci
; 73(9-10): 335-344, 2018 Sep 25.
Article
in English
| MEDLINE
| ID: mdl-29320368
Subject(s)
Antioxidants/chemistry , Indole Alkaloids/chemistry , Monoterpenes/chemistry , Rubiaceae/chemistry , Antioxidants/isolation & purification , Antioxidants/pharmacology , Crystallography, X-Ray , Indole Alkaloids/isolation & purification , Indole Alkaloids/pharmacology , Models, Molecular , Molecular Structure , Monophenol Monooxygenase/antagonists & inhibitors , Monoterpenes/isolation & purification , Monoterpenes/pharmacology , Plant Bark/chemistry , Plant Extracts/chemistry , Plant Extracts/isolation & purification , Plant Extracts/pharmacology
2.
Acta Crystallogr E Crystallogr Commun
; 71(Pt 10): o739-40, 2015 Oct 01.
Article
in English
| MEDLINE
| ID: mdl-26594451
ABSTRACT
The title compound, C34H36O9·CH3OH, is a diterpenoid isolated from the roots of Caesalpinia pulcherrima (L.) Swartz. The three trans-fused six-membered rings are in chair, chair and half-chair conformations. The mean plane of this fused-ring system makes dihedral angles of 67.95â (15) and 83.72â (14)° with the two phenyl rings of the benzo-yloxy groups. An intra-molecular C-Hâ¯O hydrogen bond is observed. In the crystal, mol-ecules are linked via O-Hâ¯O hydrogen bonds, forming an infinite chain along the b-axis direction.