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Rigid Polycycles and Peptidomimetics from Carbohydrate Synthons

โœ Scribed by Francesco Peri; Laura Cipolla; Barbara La Ferla; Eleonora Forni; Enrico Caneva; Luca De Gioia; Francesco Nicotra

Publisher
John Wiley and Sons
Year
2004
Weight
57 KB
Volume
35
Category
Article
ISSN
0931-7597

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## Abstract Bifunctional 9, 3, 17, and trifunctional 20 dienophiles have been subjected to Dielsโ€Alder reactions with 4Hโ€pyrazoles 8 or 14 with inverse electron demand to form monoadducts 13, 15, 18, and 21 and bisadducts 16, 19, and 26. Acidโ€catalyzed reactions at 20ยฐC occur according to 14 + 3 โ†’