Structures and Absolute Configurations of Three 7,8‐Secolabdane Diterpenes from the Chinese Liverwort  Pallavicinia ambigua | Zendy

Li ZiJing | Zendy; Lou HongXiang | Zendy; Yu WenTao | Zendy; Fan PeiHong | Zendy; Ren DongMei | Zendy; Ma Bin | Zendy; Ji Mei | Zendy

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Structures and Absolute Configurations of Three 7,8‐Secolabdane Diterpenes from the Chinese Liverwort Pallavicinia ambigua

Author(s) -

Li ZiJing,

Lou HongXiang,

Yu WenTao,

Fan PeiHong,

Ren DongMei,

Ma Bin,

Ji Mei

Publication year - 2005

Publication title -

helvetica chimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.74

H-Index - 82

eISSN - 1522-2675

pISSN - 0018-019X

DOI - 10.1002/hlca.200590204

Subject(s) - chemistry , labdane , stereochemistry , absolute configuration , diterpene , crystal structure , crystallography

The known 7,8‐secolabdane type diterpenoids neopallavicinin ( 1 ), pallavicinin ( 2 ), and 18‐hydroxypallavicinin ( 3 ) were isolated from Pallavicinia ambigua , and their structures were determined. The X‐ray crystal structure of 1 was solved, and, in combination with CD and NMR studies, the absolute configurations of 1 – 3 were established. A possible biogenetic pathway for 1 and 2 from a single labdane precursor is proposed.

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