Reactions of Partially Acylated Aldohexopyranosides, VIII. A New Synthesis of the Tetradeoxydisaccharide in Avermectins

Methyl 4‐O‐benzyl‐3‐O‐methyl‐2‐O‐pivaloyl‐α‐L‐rhamnopyranoside (6) was prepared from L‐rhamnose in an improved synthesis in six steps (overall yield: 51%) and was used as the key building block. Acetolysis of 6 gave the glycosyl donor, 1,4‐di‐O‐acetyl‐3‐O‐methyl‐2‐O‐pivaloyl‐α‐L‐rhamnopyranose (7),...

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Veröffentlicht in:	Liebigs Annalen der Chemie 1992-02, Vol.1992 (2), p.103-107
Hauptverfasser:	Rainer, Hildegard, Scharf, Hans-Dieter, Runsink, Jan
Format:	Artikel
Sprache:	eng
Schlagworte:	Avermectins Glycosylation Methyl 4-O-(α-L-oleandrosyl)-α-L-oleandropyranoside Photochemical deoxygenation
Online-Zugang:	Volltext
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