New Chlorinated Cyclic Bis(bibenzyls) from the Liverworts Herbertus sakuraii and Mastigophora diclados

✍ Scribed by Toshihiro Hashimoto; Hiroshi Irita; Shigeru Takaoka; Masami Tanaka; Yoshinori Asakawa

• Book ID: 104202654
• Publisher: Elsevier Science
• Year: 2000
• Tongue: French
• Weight: 138 KB
• Volume: 56
• Category: Article
• ISSN: 0040-4020
• DOI: 10.1016/s0040-4020(00)00236-2

✦ Synopsis

AbstractÐThree new cyclic bis(bibenzyls), 2,12-dichloroisoplagiochin D, 12,7 H -dichloroisoplagiochin D and 12,10 H -dichloroisoplagiochin C have been isolated from the liverwort Herbertus sakuraii belonging to the Herbertaceae, together with isoplagiochin C and isoplagiochin D which have been isolated from the liverwort Plagiochila fruticosa. Their structures have been elucidated by a combination of 2D-NMR, CD spectra, X-ray crystallographic analysis and comparison of the spectral data with those of the known isoplagiochins. 2,12-Dichloroisoplagiochin D and 12-chloroisoplagiochin D have also been isolated from the liverwort Mastigophola diclados, belonging to the Mastigophoroideae. H. sakuraii is chemically closely related to Mastigophora diclados.