rdf:type |
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lifeskim:mentions |
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pubmed:issue |
22
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pubmed:dateCreated |
2003-10-23
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pubmed:abstractText |
[reaction: see text]. Polyphosphoric acid trimethylsilyl ester (PPSE)-promoted intramolecular Friedel-Crafts reactions on a nonaromatic carboxylic acid system have been investigated. Studies led to the synthesis of C-18 functionalized steroidal compounds 5 and 9a-d with strict retention of the spiroketals. Isomerization of spiroketal 9e was studied.
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pubmed:grant |
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Alkenes,
http://linkedlifedata.com/resource/pubmed/chemical/Carboxylic Acids,
http://linkedlifedata.com/resource/pubmed/chemical/Phosphoric Acids,
http://linkedlifedata.com/resource/pubmed/chemical/Phosphorus Compounds,
http://linkedlifedata.com/resource/pubmed/chemical/Polymers,
http://linkedlifedata.com/resource/pubmed/chemical/Sapogenins,
http://linkedlifedata.com/resource/pubmed/chemical/Siloxanes,
http://linkedlifedata.com/resource/pubmed/chemical/Spiro Compounds,
http://linkedlifedata.com/resource/pubmed/chemical/Trimethylsilyl Compounds,
http://linkedlifedata.com/resource/pubmed/chemical/hecogenin,
http://linkedlifedata.com/resource/pubmed/chemical/hexamethyldisiloxane,
http://linkedlifedata.com/resource/pubmed/chemical/phosphorus pentoxide,
http://linkedlifedata.com/resource/pubmed/chemical/polyphosphoric acid
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pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
1523-7060
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:day |
30
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pubmed:volume |
5
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
4061-4
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:14572249-Acylation,
pubmed-meshheading:14572249-Alkenes,
pubmed-meshheading:14572249-Carboxylic Acids,
pubmed-meshheading:14572249-Isomerism,
pubmed-meshheading:14572249-Molecular Structure,
pubmed-meshheading:14572249-Phosphoric Acids,
pubmed-meshheading:14572249-Phosphorus Compounds,
pubmed-meshheading:14572249-Polymers,
pubmed-meshheading:14572249-Sapogenins,
pubmed-meshheading:14572249-Siloxanes,
pubmed-meshheading:14572249-Spiro Compounds,
pubmed-meshheading:14572249-Trimethylsilyl Compounds
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pubmed:year |
2003
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pubmed:articleTitle |
Polyphosphoric acid trimethylsilyl ester promoted intramolecular acylation of an olefin by a carboxylic acid: convenient construction of C-18-functionalized delta14-hecogenin acetate.
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pubmed:affiliation |
Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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