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Your search keyword '"Qiao, Hong"' showing total 2 results
2 results on '"Qiao, Hong"'

1. C19-Diterpenoid alkaloids from Delphinium umbrosum.

Author

Chen, Feng-Zheng, Chen, Qiao-Hong, and Wang, Feng-Peng

Subjects
*DELPHINIUM, *DITERPENES, *ALKALOIDS, *CHINESE medicine, *TREATMENT of arthritis
Abstract

Three new C19-diterpenoid alkaloids, umbrosumines A-C (1-3), and 11 known compounds (4-14) were isolated from the roots of Delphinium umbrosum. Their structures were elucidated on the basis of the spectroscopic data interpretation. [ABSTRACT FROM AUTHOR]

Published
2010
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2. Construction of A/E/F ring systems of C19-diterpenoid alkaloids with both C-1 and C-6 oxygen functions

Author

Liu, Zhi-Gang, Xu, Liang, Chen, Qiao-Hong, and Wang, Feng-Peng

Subjects
*ALKALOIDS, *DITERPENES, *OXYGEN, *CYCLIC compounds, *DIELS-Alder reaction, *MANNICH reaction, *METHYL groups, *ASYMMETRIC synthesis, *FUNCTIONAL groups
Abstract

Abstract: An tricyclic AEF fragment of C19-diterpenoid alkaloid bearing an angular methyl group and the oxygen function groups at C-1 and C-6 was successfully synthesized. The synthesis features a stereoselective intramolecular Diels–Alder reaction and a highly efficient intramolecular Mannich reaction as well as efficient functional groups transformations. [Copyright &y& Elsevier]

Published
2012
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