First stereoselective total synthesis of seimatopolide A
摘要:
The first stereoselective total synthesis of seimatopolide A (1) has been achieved. The key steps are Keck allylation, Sharpless asymmetric dihydroxylation, cross-, and ring-closing metathesis reactions. (C) 2012 Elsevier Ltd. All rights reserved.
ORGANOCATALYTIC PROCESS FOR ASYMMETRIC SYNTHESIS OF DECANOLIDES
申请人:Council of Scientific and Industrial Research
公开号:US20150210665A1
公开(公告)日:2015-07-30
The present invention discloses organocatalytic process for asymmetric synthesis of highly enantioselective decanolide compounds in high yield with >99% ee. Further, the present invention disclose cost effective, improved organocatalytic process for asymmetric synthesis of highly enantioselective decanolides compounds from non-chiral, cheap, easily available raw materials.
A new synthesis of (-)-(3S,6R)-3,6-dihydroxy-10-methylundecanoic acid, a β-hydroxy carboxylic acid, has been accomplished using a cross-metathesis reaction between two terminal olefin intermediates as the key step.
Total Synthesis of (+)-Cryptocaryalactone and of a Diastereoisomer of (+)-Strictifolione<i>via</i>Ring-Closing Metathesis (RCM) and Olefin Cross-Metathesis (CM)
作者:Gowravaram Sabitha、Bhaskar Vangala、S. Siva Sankara Reddy、Jhillu S. Yadav
DOI:10.1002/hlca.200900170
日期:2010.2
Ring‐closing metathesis (RCM) and olefin cross‐metathesis (CM) reactions were used as the key steps for the synthesis of (+)‐cryptocaryalactone (1) and the first synthesis of the diastereoisomer 3 of (+)‐strictifolione, starting from the commercially available L‐malic acid (=(2S)‐2‐hydroxybutanedioic acid).
A novel strategy for the chiral 2,4,5-triol moiety and its application to the synthesis of seimatopolide A and (2S,3R,5S)-(−)-2,3-dihydroxytetradecan-5-olide
A highly stereoselective approach to the total synthesis of seimatopolide A and (25,3R,5S)-(-)-2,3-dihydroxytetradecan-5-olide is described via a common polyketide precursor by means of Prins reaction and MacMillan aminoxylation sequence. (C) 2012 Elsevier Ltd. All rights reserved.
The first total synthesis of a 12-membered macrolide balticolid