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Synthetic studies toward marine toxic polyethers (2) synthesis of the B-segment of okadaic acid and coupling with the C-segment

✍ Scribed by Yoshiyasu Ichikawa; Minoru Isobe; Toshio Goto

Publisher: Elsevier Science
Year: 1984
Tongue: French
Weight: 259 KB
Volume: 25
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)91116-5

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✦ Synopsis

Part of okadaic acid la vas synthesized stereoselectively in the fora of 4a (involving C-16 through C-38 uith 10 asymaetric carbons), by coupling the equivalents of 2 and 3 as the synthetic segments Il and C (Scheme 1). the forser being prepared via 12 and 6 froa a D-glucopyranose derivative (Scheae 2). Ve have been studying the total synthesis tovard okadaic acid (l]l, and recently reported the stereocontrolled synthesis of its C-segsent (3 containing C-28 through c-38).2 Continuation of our

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