Scapaundulins A and B, two novel dimeric labdane diterpenoids, and related compounds from the Japanese liverwort Scapania undulata (L.) Dum.

✍ Scribed by Tatsuhiko Yoshida; Masao Toyota; Yoshinori Asakawa

• Publisher: Elsevier Science
• Year: 1997
• Tongue: French
• Weight: 276 KB
• Volume: 38
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(97)00252-9

✦ Synopsis

Two novel dimeric labdane diterpenoids, scapaundulins A (4) and B (5), have been isolated from the ether extract of the Japanese liverwort Scapania undulata (L.) Dum., together with three new labdane diterpenoids (1-3) and their structures characterized by spectroscopic techniques, especially 2D-NMR and mass spectrometry. The structures of scapaundulins possess a C 2 axis of symmetry.