[Assignments of 1HNMR fingerprint of the root bark of Celastrus angulatus]

  • Yao Xue Xue Bao. 2001 Jun;36(6):462-6.
H L Qin  1 ,  T Z Zhao ,  Y J Shang ,  Z T Wang
Affiliations
  • 1. Department of Pharmacognosy, China Pharmaceutical University, Nanjing 210038, China. [email protected]
PMID: 12585134
Abstract

Aim: To assign the 1HNMR finger-print of the root bark of Celastrus angulatus.

Methods: Silica gel column chromatography was used to separate the chemical constituents of CGE A of the root bark of C. angulatus. The characteristic signals of the 1HNMR finger-print were assigned after determining the structures of the compounds isolated from CGE A.

Results: 1HNMR finger-prints of the samples of C. angulatus collected from different regions showed highly characteristic features and reproducibility. Three compounds predominant in CGE A were isolated and their structures were determined by spectral analysis as: angulatin A (1), angulatin B (2) and angulatin C (3).

Conclusion: Compound 3 is a new compound. Compound 2 was isolated from C. angulatus for the first time. The 1HNMR finger-print of CGE A of the root bark of C. angulatus showed mainly the characteristic signals of the above three compounds and might be utilized for the original authentication of this plant.

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