Oxazine‐ and oxazole‐fused derivatives of the alkaloid boldine and their complete structural and spectral assignments by HMQC and HMBC experiments | Zendy

SobarzoSánchez Eduardo | Zendy; Cassels Bruce K. | Zendy; SaitzBarría Claudio | Zendy; Jullian Carolina | Zendy

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Oxazine‐ and oxazole‐fused derivatives of the alkaloid boldine and their complete structural and spectral assignments by HMQC and HMBC experiments

Author(s) -

SobarzoSánchez Eduardo,

Cassels Bruce K.,

SaitzBarría Claudio,

Jullian Carolina

Publication year - 2001

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.852

Subject(s) - chemistry , quinoline , alkaloid , oxazole , stereochemistry , carbon 13 nmr , spectral analysis , organic chemistry , spectroscopy , physics , quantum mechanics

The novel heterocycles 1,11‐dimethoxy‐2‐hydroxy‐6‐methyloxazolo[4,5‐ k ]‐5,6,6a,7‐tetrahydro‐4 H ‐dibenzo [ de,g ]quinoline, 1,12‐dimethoxy‐2‐hydroxy‐6‐methyl‐9‐phenyl‐10 H ‐oxazin[5,6‐ k ]‐5,6,6a,7‐tetrahydro‐4 H ‐ dibenzo[ de,g ]quinolin‐10‐one and 1,11‐dimethoxy‐2‐hydroxy‐6‐methyl‐9‐phenyloxazolo[4,5‐ k ]‐5,6,6a,7‐tetrahydro‐4 H ‐dibenzo[ de,g ]quinoline were prepared starting from the alkaloid boldine. The structures were confirmed and the 1 H and 13 C NMR spectra were completely assigned using a combination of one‐ and two‐dimensional NMR techniques. Copyright © 2001 John Wiley & Sons, Ltd.

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