Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
22
pubmed:dateCreated
2003-10-23
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.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
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
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1523-7060
pubmed:author
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
5
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4061-4
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2003
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.
pubmed:affiliation
Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.