New γ-pyrone propionates from the Indian Ocean sacoglossan Placobranchus ocellatus
Two new γ-pyrone propionates (i.e., 9 , relative stereochemistry), characterised by a bicyclo [4.2.0] octane ring, have been isolated from the Indian sacoglossan Placobranchus ocellatus. A sunscreen protective role of compound 9 could be suggested by analogy with photodeoxytridachione previously fou...
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Published in | Tetrahedron letters Vol. 46; no. 3; pp. 465 - 468 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
OXFORD
Elsevier Ltd
17.01.2005
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | Two new γ-pyrone propionates (i.e.,
9
, relative stereochemistry), characterised by a bicyclo [4.2.0] octane ring, have been isolated from the Indian sacoglossan
Placobranchus ocellatus. A sunscreen protective role of compound
9
could be suggested by analogy with photodeoxytridachione previously found in the same mollusc.
A new γ-pyrone propionate, compound
9
, and its peroxy derivative
10
have been isolated from the sacoglossan
Placobranchus ocellatus. The structure and the relative stereochemistry of the new molecules, which displayed an unprecedented carbon skeleton characterised by a bicyclo [4.2.0] octane, have been determined by both spectroscopic methods and comparison with model compounds. By analogy with photodeoxytridachione (
2
), a sunscreen protective role could be also suggested for compound
9
in living
P. ocellatus. |
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ISSN: | 0040-4039 1873-3581 |
DOI: | 10.1016/j.tetlet.2004.11.085 |