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The preparation of a hexacyclic intermediate for the synthesis of strychnos alkaloids

✍ Scribed by George A. Kraus; Dan Bougie

Book ID
104204301
Publisher
Elsevier Science
Year
1994
Tongue
French
Weight
678 KB
Volume
50
Category
Article
ISSN
0040-4020

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Tetracycles 3b-d, having the ABCD ring substructure of Strychnos alkaIoids and a &(formvhnethvl) substituent mokcted as an oxime or hvdraxone derivative. have been p&&d-by nu&phiIic addition of the enolate of indok.a&tic ester 1 to pyridinium salts 2b-d followed by acid cyclization. The same one-pot