Two new quaternary protoberberine alkaloids from Corydalis yanhusuo

Peking Union Medical College Hospital, Peping, Beijing, China
Journal of Asian natural products research (Impact Factor: 0.91). 05/2012; 14(5):476-81. DOI: 10.1080/10286020.2012.677038
Source: PubMed


Two new quaternary protoberberine alkaloids, namely corydayanine (1) and yanhusuine (2), were isolated from the tubers of Corydalis yanhusuo. On the basis of extensive chemical and spectroscopic evidences, especially 1D and 2D NMR and HRMS experiments, their structures were elucidated as 5,6-dihydro-3,9-dihydroxy-2,10-dimethoxy-13-methyl-dibenzo[a,g] quinolizinium alkaloid and 5,6-dihydro-12-hydroxy-2,3,9-trimethoxy-13-methyl-dibenzo[a,g] quinolizinium alkaloid, respectively.

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    ABSTRACT: Corydalis Rhizoma, the dried tuber of Corydalis yanhusuo (Papaveraceae) distributed traditionally mainly in south-eastern and now cultivated in northwestern and other district in China, is one of the commonly used and well-known traditional Chinese medicine. It has been widely used to treat spastic pain, abdominal pain, pain due to injury, and promote blood circulation. Its main chemical constituents were alkaloids, which were divided into the two types of protoberberines and aporphines. Among them, some alkaloids were found to elicit profound effects on the dopaminergic system in the central nervous system, which plays an important role in regulating nociception. In this article, the chemical composition and structure-types, new methods of qualitative and quantitative analysis as well as characteristics of biotransformation, absorption, distribution, metabolism, excretion, pharmacokinetic, and drug-drug interaction for the alkaloids were revealed. These results would greatly contribute to the establishment of bioactive material base of Corydalis Rhizoma.
    Preview · Article · Apr 2014 · Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
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    ABSTRACT: Yuanhu Zhitong Prescription, which consisted of Corydalis and Angelica dahurica, is a clinical commonly used classical prescription, with exactly analgesic effect. At present, the study found that the main chemical components of this prescription contain alkaloids, coumarins, volatile oil, phenolic acids, steroids, and triterpenes, with the alkaloids from Corydalis and coumarins from Angelica dahurica as the main chemical constituents; Pharmacological research shows that the prescription has analgesia, vasodilatation, spasmolysis, and other pharmacological activities. In this paper, the research progress in the chemical constituents and pharmacologic actions of Yuanhu Zhitong Prescription are reviewed, providing the scientific basis for its modernization research and comprehensive utilization. ©, 2015, Editorial Office of Chinese Traditional and. All right reserved.
    No preview · Article · Apr 2015 · Chinese Traditional and Herbal Drugs