STUDY OF 2D NMR OF DIHYDROAGAROFURAN SESQUITERPENES

Chinese Journal of Magnetic Resonance ›› 1992, Vol. 9 ›› Issue (1): 45-50.

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STUDY OF 2D NMR OF DIHYDROAGAROFURAN SESQUITERPENES

Tu Yongqiang¹, Li Zfzhong¹, Wu Dagang²

1. National Laboratory of Applicational Organic Chemistry, Lanzhou University;
2. Kunming Institute of Botany, the Chinese Academy of Sciences, Kunming

Received:1991-01-23 Revised:1991-04-12 Published:1992-03-05 Online:2018-01-20

Abstract

Abstract: The complete assignments of ¹³C NMR chemical shifts for 1β-acetoxy-2β (α-methylbutanoyloxy)-6α-hydroxy-8β,9α-dibenzoyloxy-β-dihydroaga -rofuran(A) and 1β-acetoxy-2β(α-methylbutanoyloxy)-6α-hydroxy-8β -(β-furancarbonyloxy) -9α-benzoyloxy -β-dihydroagarofuran(B), were carried out on the basis of ¹H-¹³C correlation(¹H-¹³C COSY) spectra. The weak coupling between 6-Ha and 7-He, and between 8 -He and 9-He, and the "W" long -range coupling between 7-He and 9-He for compounds A and B were also determined on the basis of ¹H-¹H long-range correlation (¹H -¹H COSYLR) spectra.

Key words: Dihydroagarofuran sesquitcrpene, ¹H-¹H COSYLR, Long-range coupling, ¹H-¹³C COSY, Chemical shift

Tu Yongqiang, Li Zfzhong, Wu Dagang. STUDY OF 2D NMR OF DIHYDROAGAROFURAN SESQUITERPENES[J]. Chinese Journal of Magnetic Resonance, 1992, 9(1): 45-50.

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STUDY OF 2D NMR OF DIHYDROAGAROFURAN SESQUITERPENES

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