Proton and carbon‐13 NMR spectra of some 3,4‐fused pyranocoumarins and furocoumarins | Zendy

Patra Amarendra | Zendy; Panda Samir K. | Zendy; Majumdar K. C. | Zendy; Khan A. T. | Zendy; Saha S. | Zendy

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Proton and carbon‐13 NMR spectra of some 3,4‐fused pyranocoumarins and furocoumarins

Author(s) -

Patra Amarendra,

Panda Samir K.,

Majumdar K. C.,

Khan A. T.,

Saha S.

Publication year - 1991

Publication title -

magnetic resonance in chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0749-1581

DOI - 10.1002/mrc.1260290616

Subject(s) - furocoumarins , chemistry , benzopyran , coupling constant , proton , proton nmr , spectral line , carbon 13 nmr , stereochemistry , photochemistry , nuclear physics , physics , particle physics , astronomy

Carbon‐13 spectral assignments of five pyrano [3,2‐ c ] [1] benzopyran‐5 (2 H )—ones, five pyrano[2,3‐ c ][1] benzopyran‐5 (2 H )—ones and five 2‐methylfuro[2,3‐ c ][1] benzopyran‐4‐ones and of 2‐methylfuro [3,2‐ c ][1]benzopyran‐4‐one and 4‐(2‐chloroallyl)‐3‐hydroxycoumarin were made from mutual correlations, 13 C/ 1 H coupling constant measurements and 2D X–H correlation analyses. High‐resolution proton resonance assignments of these compounds are reported.

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