Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/68045
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dc.coverage.spatialChemistry
dc.date.accessioned2016-01-06T04:48:58Z-
dc.date.available2016-01-06T04:48:58Z-
dc.identifier.urihttp://hdl.handle.net/10603/68045-
dc.description.abstractTagitinin-E has been synthesized from tagitinin-C(3), thus leading to a revised structure for tagitinin-E(7). Ciliarin (19a) and orizabin (21a) have been synthesized from tagitinin-C(3) which delineates the question about the absolute stereochemistry of the ester side chain at C-8. Since calaxin (18 ) and zexbrevin (17 ) have been correlated with orizabin and ciliarin, it has been suggested that the stereochemistry of ester side chain in these compounds should also be revised. Besides these, some correlation attempts have been described which though not leading to the desired goal gave compounds which appeared to be chemically interesting. The third part of the thesis describes the experiments aimed at synthesizing vernolepin (39) from cynaropicrin(40) and tagitinin-C(3). The behaviour of the epoxides with different Lewis acids and mineral acids have been studied which while not leading to the desired rearrangement paves a way for further designing of the experiments to synthesize vernolepin (39).
dc.format.extent
dc.languageEnglish
dc.relation
dc.rightsuniversity
dc.titleChemical transformations of abundant natural products
dc.title.alternative
dc.creator.researcherChowdhury, Pritish Koomar
dc.subject.keywordAbundant
dc.subject.keywordBiological
dc.subject.keywordChemical
dc.subject.keywordChemistry
dc.subject.keywordCynaropicrin
dc.subject.keywordMethylene
dc.subject.keywordOrizabin
dc.subject.keywordTagitinin
dc.description.noteData not available
dc.contributor.guideSharma, R P
dc.publisher.placeGuwahati
dc.publisher.universityGauhati University
dc.publisher.institutionDepartment of Chemistry
dc.date.registeredn.d.
dc.date.completed31/12/1981
dc.date.awardedn.d.
dc.format.dimensions
dc.format.accompanyingmaterialNone
dc.source.universityUniversity
dc.type.degreePh.D.
Appears in Departments:Department of Chemistry

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01_title page.pdfAttached File17.9 kBAdobe PDFView/Open
02_certificate.pdf44.56 kBAdobe PDFView/Open
03_dedicated.pdf11.36 kBAdobe PDFView/Open
04_content.pdf32.24 kBAdobe PDFView/Open
05_acknowledgement.pdf25.35 kBAdobe PDFView/Open
06_abstract.pdf22.98 kBAdobe PDFView/Open
07_abbreviations used.pdf11.77 kBAdobe PDFView/Open
08_chapter 1.pdf880.73 kBAdobe PDFView/Open
09_chapter 2.pdf1.04 MBAdobe PDFView/Open
10_chapter 3.pdf1.13 MBAdobe PDFView/Open
11_references.pdf66.5 kBAdobe PDFView/Open


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