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Synthesis of hexacyclic indole alkaloids related to vindolinine by sonochemical cyclization

✍ Scribed by Georgette Hugel; Dominique Cartier; Jean Lévy

Book ID: 104233174
Publisher: Elsevier Science
Year: 1989
Tongue: French
Weight: 236 KB
Volume: 30
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)80732-2

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✦ Synopsis

the N-trifluoroacetamide 11 (mp 150°C, dec; ms, m/z 558.0539 (M.+, talc, 558.0628), 431(100 %); 1 t-l nmr, a ppm 1.65 (d,l H,J=7Hz,H-19), 350(s,3H,COOMe); uv, nm, 210, 227(sh), 235(sh), 290).

Lactam 8 (racemic) was obtained by total synthesis and further transformed by action of lead tetraacetate into the acetoxyindolenine 914.

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