Diterpenoids from seeds of Caesalpinia sappan / 中草药

ABSTRACT

Objective: To study the chemical constituents from the seeds of Caesalpinia sappan. Methods: The constituents were isolated and purified by silica gel chromatography repeatedly, and the structures were identified by spectral analysis and chemical methods. Results: Fifteen compounds were isolated from the seeds of C. sappan and the structures were identified as caesaldekarin K (1), demethylcaesaldekarin C (2), taepeenin H (3), taepeenin I (4), caesalpinista A (5), caesalpinista B (6), cordylane C (7), deoxycaesaldekarin C (8), phanginins A-E (9-13), β-sitosterol (14), and β-daucosterol (15). Conclusion: Compounds 1-8 and 14-15 are first obtained from the seeds of C. sappan.