Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2009-9-1
pubmed:abstractText
Sixteen new D-ring-opened phragmalin limonoid orthoesters, swietenitins A-M (1-6, 8, 10, 12-16), 2-acetoxyswietenialide D (7), 2,11-diacetoxyswietenialide D (9), and 11-deoxyswietenialide D (11), and four known compounds were isolated from the twigs of Swietenia macrophylla. The structures of 1-16 were established on the basis of spectroscopic methods, and 1 and 2 were confirmed by single-crystal X-ray diffraction. The (1)H NMR-based conformational analysis on the epimeric compounds 1 and 2 provided a general approach to determine the absolute configuration of the 2,3-epoxy-2-methylbutyryloxy unit at C-3 borne by a large group of the known phragmalin-type limonoid orthoesters.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1520-6025
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
72
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1305-13
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
D-ring-opened phragmalin-type limonoid orthoesters from the twigs of Swietenia macrophylla.
pubmed:affiliation
Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, People's Republic of China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't