Synlett 2013; 24(2): 219-222
DOI: 10.1055/s-0032-1317932
letter
© Georg Thieme Verlag Stuttgart · New York

Formal Synthesis of 3-Deoxy-d-manno-Octulosonic Acid (KDO) and 3-Deoxy-d-arabino-2-heptulosonic Acid (DAH)

Tapan Kumar Pradhan
a   Applied Chemistry Department, National Chiao Tung University (NCTU), Hsinchu, Taiwan, R.O.C.   Fax: +886(3)5723764   Email: tmong@mail.nctu.edu.tw
,
Chun Cheng Lin
b   Chemistry Department, National Tsing Hua University (NTHU), Hsinchu, Taiwan, R.O.C
,
Kwok Kong Tony Mong*
a   Applied Chemistry Department, National Chiao Tung University (NCTU), Hsinchu, Taiwan, R.O.C.   Fax: +886(3)5723764   Email: tmong@mail.nctu.edu.tw
› Author Affiliations
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Publication History

Received: 05 November 2012

Accepted after revision: 28 November 2012

Publication Date:
21 December 2012 (online)


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Abstract

Practical synthetic routes to 3-deoxy-d-manno-octulo­sonic acid (KDO) and 3-deoxy-d-arabino-2-heptulosonic acid (DAH) from common sugar substrates are reported. Chain homologation of the sugar substrates was accomplished by Wittig olefination and Corey–Fuchs alkynylation. A new cyclization strategy was investigated to access the desired pyranosyl isomer of the KDO target.

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