Planta Med 2013; 79(16): 1588
DOI: 10.1055/s-0033-1350998
Erratum
Georg Thieme Verlag KG Stuttgart · New York

Isolation, Structural Elucidation, and Cytotoxicity of Three New ent-Kaurane Diterpenoids from Isodon japonica var. glaucocalyx

Authors

  • Hui-Juan Liang

    1   School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, P. R. China
  • Yun-Xiao Zhang

    2   Department of Chemistry, Zhengzhou University, Zhengzhou, Henan, P. R. China
  • Guang-Fan Hai

    1   School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, P. R. China
  • Su-Ping Bai

    1   School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, P. R. China
  • Yong-Liang Yuan

    1   School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, P. R. China
  • Dan-Dan Ye

    1   School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, P. R. China
  • Nan-Qian Zhou

    3   Basic Medical Science College, Xinxiang Medical University, Xinxiang, Henan, P. R. China
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Publikationsverlauf

Publikationsdatum:
15. Oktober 2013 (online)

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Erratum for: Isolation, Structural Elucidation, and Cytotoxicity of Three New ent-Kaurane Diterpenoids from Isodon japonica var. glaucocalyx

Published in Planta Medica 2012; 78 (6): 589–596

The structure of natural compound 1 isolated from Isodon japonica var. glaucocalyx, glaucocalyxin H, was assigned incorrectly and should be assigned as following [Fig. 1].

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Fig. 1 Structural correction of compound 1.

In our published paper, the position of two hydroxyl groups in aromatic ring was elucidated as 3',5'-dihydroxy substitution by 1D and 2D NMR experiment. Recently, in our research project for the structural modification of the parent compound of 1, glaucocalyxin A, we synthesized the compound 1 from glaucocalyxin A and 3,4-dihydroxybenzaldehyde (i.e. protocatechualdehyde). The result confirmed that the two hydroxyl groups of 1 should be located in C-3', C-4'.

Our Supporting Information was corrected accordingly.