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Cyclic products of the Ugi reaction of aldehydo and keto carboxylic acids: chemoselective modification

✍ Scribed by Alan Tsaloev; Alexei Ilyin; Sergey Tkachenko; Alexandre Ivachtchenko; Dmitry Kravchenko; Mikhail Krasavin

Publisher: Elsevier Science
Year: 2011
Tongue: French
Weight: 277 KB
Volume: 52
Category: Article
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2011.02.028

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✦ Synopsis

A method for the chemoselective reduction of Ugi-type lactam amides at the lactam carbonyl functionality with borane complexes has been developed. The novel reduction products can be further manipulated synthetically to yield various novel N-and C-terminally active unnatural amino acid building blocks.

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