Publication: New acylphloroglucinols from a crude acetone extract of Eucalyptus camaldulensis Dehnh. leaf
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Issued Date
2022
Resource Type
Language
eng
File Type
application/pdf
ISSN
14786419
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol 2022-May, No. (2022), p.5997-6001
Suggested Citation
Daus M., Chakthong S., Dumjun K., Paosen S., Voravuthikunchai S.P., Poldorn P., Jungsuttiwong S., Chomlamay N., Yangok K., Watanapokasin R. New acylphloroglucinols from a crude acetone extract of Eucalyptus camaldulensis Dehnh. leaf. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol 2022-May, No. (2022), p.5997-6001. doi:10.1080/14786419.2022.2118742 Retrieved from: https://hdl.handle.net/20.500.14740/9636
Abstract
Acylphloroglucinols are well-known Eucalyptus secondary metabolites which exhibit a variety of structures and bioactivities. The investigation of a crude acetone extract of Eucalyptus camaldulensis leaves led to the isolation of two new acylphloroglucinols, eucalypcamals O and P (1 and 2) together with seven phloroglucinols (3–9), and a benzene derivative (10). Their chemical structures were elucidated by 1D and 2D nuclear magnetic resonance (NMR) spectroscopy and mass spectroscopy. The absolute configurations of compounds 1 and 2 were established by comparison of experimental and calculated electronic circular dichroism (ECD) data. In the putative biosynthetic pathway, eucalypcamals O and P should be derived from hetero-Diels-Alder reaction between grandinol and trans-isoeugenol. © 2022 Informa UK Limited, trading as Taylor & Francis Group.