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. 2021 Nov 23;11(59):37643-37648.
doi: 10.1039/d1ra07041j. eCollection 2021 Nov 17.

Dalpulapans A-E from the roots of Dalbergia stipulacea

Priyapan Posri  1 , Thurdpong Sribuhom  1 , Sookkawath Walunchapruk  2 , Thanaset Senawong  2 , Sarawut Tontapha  3 , Vittaya Amornkitbamrung  3 , Chavi Yenjai  1
Affiliations

Dalpulapans A-E from the roots of Dalbergia stipulacea

Priyapan Posri et al. RSC Adv. .

Abstract

Five new compounds, dalpulapans A-E (1-5), were isolated from the hexane extract of the roots of Dalbergia stipulacea Roxb. Five new compounds, dalpulapans A-E (1-5), were isolated from the hexane extract of the roots of Dalbergia stipulacea Roxb. An evaluation of cytotoxic activity against HeLa, A549 and normal cell lines using MTT assay was performed. The results showed that R,R-velucarpin A (6) was the most active against HeLa cells with an IC50 value of 10.9 ± 0.42 μM, while fortunately this compound exhibited weak cytotoxicity against normal cells (29.20 ± 1.16 μM). Structures of all isolates were identified from their 1D and 2D NMR spectroscopic data and MS analysis. Experimental and calculated ECD spectra were studied to define the absolute configurations.

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Conflict of interest statement

The authors declare no competing financial interests.

Figures

Fig. 1
Fig. 1. Structures of all isolated compounds 1–12.
Fig. 2
Fig. 2. Key HMBC correlations of compounds 1–5.
See this image and copyright information in PMC

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