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Sesquiterpenoids from the Rhizomes of Homalomena occulta.


ABSTRACT: Naturally occurring oplopanane sesquiterpenoids are rarely reported. A phytochemical investigation on the rhizomes of Homalomena occulta (Lours) has resulted in the discovery of six oplopanane sesquiterpenoids (1-6), including four new (1-4) and one 3,5-seco-oplopanane (6), together with three previously reported sesquiterpenoids (7-9). In addition three new oplopananes (2a-4a) were also obtained by chemical transformation. All structures of these sesquiterpenoids were established based on the comprehensive spectroscopic analyses, including NMR, MS, and IR, and comparing with the literatures.

SUBMITTER: Yang JL 

PROVIDER: S-EPMC4940255 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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Sesquiterpenoids from the Rhizomes of Homalomena occulta.

Yang Jun-Li JL   Zhao Ya-Min YM   Shi Yan-Ping YP  

Natural products and bioprospecting 20160705 4


Naturally occurring oplopanane sesquiterpenoids are rarely reported. A phytochemical investigation on the rhizomes of Homalomena occulta (Lours) has resulted in the discovery of six oplopanane sesquiterpenoids (1-6), including four new (1-4) and one 3,5-seco-oplopanane (6), together with three previously reported sesquiterpenoids (7-9). In addition three new oplopananes (2a-4a) were also obtained by chemical transformation. All structures of these sesquiterpenoids were established based on the c  ...[more]

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