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13C NMR spectra of 1, 3, 6 -trihydroxy-7-methoxy-8-(3, 7 -dimethyl-2,6-octadienyl) xanthone and its dimethyl derivative

✍ Scribed by Hiok-Huang Lee; Soon Ng


Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
314 KB
Volume
21
Category
Article
ISSN
0031-9422

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## Abstract The proton spectra of bicyclo[3.2.0]hept‐2‐en‐6‐one and the 7,7‐dimethyl, 7,7‐dichloro and 7‐__endo__‐chloro derivatives were analysed and the chemical shifts and coupling constants are reported. Molecular modelling and chemical shift calculations together with the observed couplings sh