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Complete 1H and 13C NMR assignments of clerodane diterpenoids of Salvia splendens

✍ Scribed by Gianfranco Fontana; Giuseppe Savona; Benjamín Rodríguez

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
150 KB
Volume
44
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Unambiguous and complete assignments of ^1^H and ^13^C NMR chemical shifts for five clerodane diterpenes, four of them isolated from Salvia splendens (salviarin, splendidin and splenolides A and B) and one obtained by acetylation of splenolide A, are presented. The assignments are based on 2D shift‐correlated [^1^H,^1^H–COSY, ^1^H,^13^C‐gHSQC–^1^J(C,H) and ^1^H,^13^C‐gHMBC‐^n^J(C,H) (n = 2 and 3)] and nuclear Overhauser effect (NOE) experiments. The conformation of the rings of these compounds is supported by the ^3^J(H,H) values and NOE results. Copyright © 2006 John Wiley & Sons, Ltd.

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