New dibenzofurans and depsides from the lichen Bunodophoron patagonicum.
Author(s)
Elix, John A.
Venables, Debra Ann
Wedin, Mats
Griffith University Author(s)
Year published
1994
Metadata
Show full item recordAbstract
The lichen Bunodophoron patagonicum has been shown to contain five new dibenzofurans: ascomatic acid (I, R1 = H, R2, R3 = Me) and its Me ester (I, R1-R3 = Me); 7-O-methylnorascomatic acid (I, R1 = R2 = H, R3 = Me) and its Me ester (I, R1 = R3 = Me, R2 = H); and norascomatic acid (I, R1-R3 = H). The lichen also contains two new depsides: patagonic acid [II, R4 = Me, R5 = CH2CO(CH2)6Me] and isopatagonic acid [II, R4 = CH2CO(CH2)6Me, R5 = Me]. The structure of all new natural products was confirmed by total synthesis.The lichen Bunodophoron patagonicum has been shown to contain five new dibenzofurans: ascomatic acid (I, R1 = H, R2, R3 = Me) and its Me ester (I, R1-R3 = Me); 7-O-methylnorascomatic acid (I, R1 = R2 = H, R3 = Me) and its Me ester (I, R1 = R3 = Me, R2 = H); and norascomatic acid (I, R1-R3 = H). The lichen also contains two new depsides: patagonic acid [II, R4 = Me, R5 = CH2CO(CH2)6Me] and isopatagonic acid [II, R4 = CH2CO(CH2)6Me, R5 = Me]. The structure of all new natural products was confirmed by total synthesis.
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Journal Title
Australian Journal of Chemistry
Volume
47
Issue
7
Subject
Chemical Sciences