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A novel degradation in the avermectin series: A stereospecific osmylation reaction

✍ Scribed by Harold G. Selnick; Samuel J. Danishefsky

Book ID
104227962
Publisher
Elsevier Science
Year
1987
Tongue
French
Weight
182 KB
Volume
28
Category
Article
ISSN
0040-4039

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## Abstract 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‐__