alexa A cytotoxic and antifungal 1,4-naphthoquinone and related compounds from a New Zealand brown algae, Landsburgia quercifolia.
Chemistry

Chemistry

Medicinal Chemistry

Author(s): Perry NB, Blunt JW, Munro MH

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Abstract The bioactivity-directed isolation of deoxylapachol [I] from a New Zealand brown alga, Landsburgia quercifolia, is described. Compound I was active against P-388 leukemia cells (IC50 0.6 microgm/ml) and was also antifungal. 1,4-Dimethoxy-2-(3-methyl-2-butenyl)-naphthalene [3] was the major low polarity component of extracts of this seaweed, which also contained 2,3-dihydro-2,2-bis(3-methyl-2-butenyl)-1,4-naphthalenedione [6] and 2-(3-methyl-2-butenyl)-2,3-epoxy- 1,4-naphthalenedione 4,4-dimethoxy ketal [7]. Compound 7 was converted to the 2,3-epoxide of I, which had biological activities similar to those of I.
This article was published in J Nat Prod and referenced in Medicinal Chemistry

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