摘要:
Two dimeric monoterpenes obtusal A and B, and two dimeric diterpenes obtusanol A and 13, along with (-)-(S)-citronellol, (-)-(S)-citronellic acid, (+)-borneol, (+)-sugiol, and (-)-6.12-dihydroxyabieta-5,8,11,13-tetraen-7-one, have been isolated from the heartwood of Chamaecyparis obtusa var. formosana and were characterized by spectroscopic means, including 2D-NMR techniques and chemical methods. Synthesis of obtusal (-)- A and (+)-obtusal B were carried out.