Newbouldiaquinone and Newbouldiamide

Newbouldiaquinone and Newbouldiamide

Newbouldiaquinone (1), a new naphthoquinone-anthraquinone coupled pigment and a new ceramide named newbouldiamide (2), have been isolated from Newbouldia laevis, besides the known compounds lapachol (3), canthic acid, oleanolic acid, 2-methyl-9,10-anthracenedione, 2-acetylfuro-1,4-naphthoquinone, 2,...

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Veröffentlicht in:Chemical & pharmaceutical bulletin 2005-06, Vol.53 (6), p.616
Hauptverfasser: Oben Eyong, Kenneth, Krohn, Karsten, Hussain, Hidayat, Ngosong Folefoc, Gabriel, Ephram Nkengfack, Augustin, Schulz, Barbara, Hu, Qunxiu
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container_issue 6
container_start_page 616
container_title Chemical & pharmaceutical bulletin
container_volume 53
creator Oben Eyong, Kenneth
Krohn, Karsten
Hussain, Hidayat
Ngosong Folefoc, Gabriel
Ephram Nkengfack, Augustin
Schulz, Barbara
Hu, Qunxiu
description Newbouldiaquinone (1), a new naphthoquinone-anthraquinone coupled pigment and a new ceramide named newbouldiamide (2), have been isolated from Newbouldia laevis, besides the known compounds lapachol (3), canthic acid, oleanolic acid, 2-methyl-9,10-anthracenedione, 2-acetylfuro-1,4-naphthoquinone, 2,3-dimethoxy-1,4-benzoquinone, 2-(4-hydroxyphenyl)ethyl triacontanoate, β-sitosterol and β-sitosterol glucopyranoside. The structure elucidations of the isolated new compounds were performed on the basis of spectroscopic and chemical evidence. Preliminary studies showed that 1 is moderately antibacterial against Gram-positive Bacillus megaterium and that 3 has moderate herbicidal and antibacterial activities.
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title Newbouldiaquinone and Newbouldiamide
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