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Two new guaianolide-type sesquiterpenoids,4β,9β-dihydroxy-1α,5α-H-guaia-6,10(14)-dien(1) and 4β,9β,10α-trihydroxy-1α,5α-H-guaia-6-en(2),along with four known sesquiterpenoids(3a,3b,4 and 5),were isolated from Kadsura interior.Their structures and configurations were elucidated by spectroscopic methods including 2D-NMR and HR-MS techniques.Compounds 3a and 3b were obtained as a pair of enantiomers,and their structure and absolute configuration were established from their extensive NMR spectra and by single-crystal X-ray analysis.
Two new guaianolide-type sesquiterpenoids, 4β, 9β-dihydroxy-1α, 5α-H-guaia-6,10 (14) -dien (1) and 4β, 9β, 10α-trihydroxy- (3a, 3b, 4 and 5), were isolated from Kadsura interior. The structures and configurations were elucidated by spectroscopic methods including 2D-NMR and HR-MS techniques. Compounds 3a and 3b were obtained as a pair of enantiomers, and their structure and absolute configuration were built from their extensive NMR spectra and by single-crystal X-ray analysis.