Enantioselective total synthesis of (-)-Salinosporamide A (NPI-0052).
نویسندگان
چکیده
A novel enantioselective total synthesis of 20S proteasome inhibitor Salinosporamide A (NPI-0052; 1) is presented. Key features include intramolecular aldol cyclization of 6 to simultaneously generate the three chiral centers of advanced intermediate 5, cyclohexene ring addition using B-2-cyclohexen-1-yl-9-BBN, and inversion of the C-5 stereocenter by oxidation followed by enantioselective enzymatic reduction.
منابع مشابه
Discovery and development of the anticancer agent salinosporamide A (NPI-0052).
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متن کاملJ. Antibiot. 60(1): 13–19, 2007
We examined the effects of halogens on the production of salinosporamide A (NPI-0052) by the obligate marine actinomycete Salinispora tropica NPS465, specifically the production of analogs containing halogens other than chlorine. Adding NaF, NaBr and NaI directly to the production medium prepared in seawater containing 3% NaCl did not induce the production of the corresponding analogs. Replacin...
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عنوان ژورنال:
- Organic letters
دوره 9 12 شماره
صفحات -
تاریخ انتشار 2007