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[6-13C]-(2S,4S)-5-Chloroleucine: synthesis and incubation studies with cultures of the cyanobacterium, Lyngbya majuscula

✍ Scribed by William H. Gerwick; Pauline Leslie; G.Cliona Long; Brian L. Marquez; Christine L. Willis

Book ID: 104252673
Publisher: Elsevier Science
Year: 2003
Tongue: French
Weight: 240 KB
Volume: 44
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(02)02572-8

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✦ Synopsis

6-

C]-(2S,4S)-5-Chloroleucine 12 was prepared in six steps and 26% overall yield from protected L-glutamic acid using 13 CH 3 I as the source of isotopic label. On feeding 12 to cultures of L. majuscula no incorporation of isotopic label into the trichlorinated marine natural product barbamide was detected. The synthesis of a novel dichloro amino acid 16 is also described.

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