Alkaloids and Polyacetylenes from Hippobroma longiflora with Antiangiogenesis Properties

Tzu Yi Ke, Shih Wei Wang, Shu Rong Chen, Dong Ming Huang, Yun Sheng Lin, Tsong Long Hwang, Wen Chun Sun, Yuan Bin Cheng*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

1 Scopus citations

Abstract

Four new alkaloids, hippobrines A-D (1-4), along with three new polyacetylenes, hippobrenes A-C (5-7), were isolated from Hippobroma longiflora. Compounds 1-3 possess an unprecedented carbon skeleton. All of the new structures were determined by analyzing their mass and NMR spectroscopic data. The absolute configurations of 1 and 2 were confirmed by single-crystal X-ray analyses, and the absolute configurations of 3 and 7 were deduced using their ECD spectra. Plausible biogenetic pathways of 1 and 4 were proposed. In regard to bioactivities, all compounds (1-7) exhibited weak antiangiogenic activity against human endothelial progenitor cells, with IC50 values ranging from 21.1 ± 1.1 to 44.0 ± 2.3 μg/mL.

Original languageEnglish
Pages (from-to)719-729
Number of pages11
JournalJournal of Natural Products
Volume86
Issue number4
DOIs
StatePublished - 28 04 2023

Bibliographical note

Publisher Copyright:
© 2023 American Chemical Society and American Society of Pharmacognosy.

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