4β-Isocyanopodophyllotoxins: valuable precursors for the synthesis of new podophyllotoxin analogues
✍ Scribed by Ying-Qian Liu; Lin-Hai Li; Wen-Qun Li; Gang Feng; Liu Yang
- Book ID
- 111491498
- Publisher
- Versita
- Year
- 2011
- Tongue
- English
- Weight
- 151 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0366-6352
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✦ Synopsis
Abstract
A new and efficient method for the synthesis of novel 4β-isocyanopodophyllotoxins as a valuable building block for the synthesis of versatile bioactive podophyllotoxin analogues under both classical and ultrasonic conditions was developed. In general, significant improvements in rates of reaction and yields of sonochemical reactions relative to the classical ones were observed.
📜 SIMILAR VOLUMES
## Abstract For Abstract see ChemInform Abstract in Full Text.
To enrich the limited set of isonitriles typically employed, 4-isocyano-2,2,6,6-teramethylpiperidin-1-oxyl (1) is proposed as an isonitrile bearing a nitroxyl moiety. Isocyanide 1 was used in some reactions characteristic of isonitriles. Isoselenocyanate, amides (products of Passerini and Ugi reacti