Gluco‐indole alkaloids from the bark of <i>Nauclea diderrichii</i>. ¹H and ¹³C NMR assignments of 3α‐5α‐tetrahydrodeoxycordifoline lactam and cadambine acid

Abstract

Detailed (1)H and (13)C NMR assignments of 3alpha-5alpha-tetrahydrodeoxycordifoline lactam and cadambine acid, isolated from the bark of the Nauclea diderrichii (de Wild.) Merr. (Rubiaceae) were achieved by 1D and 2D techniques such as DEPT, HMBC, HMQC, COSY and NOESY.