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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Asymmetric formal total synthesis of cortistatins A and J

Kuang, Liping, 况利平 January 2014 (has links)
published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy
42

The total synthesis of (±)-renieramycin g and studies toward the synthesis of (±)-lemonomycin and (±)-saframycin b

Matthews, Kenneth Stanley 28 August 2008 (has links)
Not available / text
43

Part I: A circular study of ketal formation of some steroidal ketones Part II: Studies in the synthesis of camptothecin and analogs

French, Kenneth Alfred 05 1900 (has links)
No description available.
44

The determination of the partition coefficients for a variety of pyrrolizidine alkaloids and the relationship of these values to the anti-tumor activity of the alkaloids

Ryan, Edward Thomas 08 1900 (has links)
No description available.
45

Interactive antifungal activity between co-occurring Solanum glycoalkaloids

Fewell, Alison January 1993 (has links)
No description available.
46

Isolation and characterization of Steroidal Alkaloids from Buxus macowanii using chromatographic and spectroscopic methods

Almalki, Manal 30 September 2014 (has links)
This thesis describes the isolation and characterization of four steroidal alkaloids from Buxus macowanii. Phytochemical investigation of Buxus macowanii resulted in the isolation of two novel steroidal alkaloids, Nb-demethyl-6-deoxy-16-acetoxy O2-natafuranamin (112), and 6-deoxy-16-acetoxy O10-natafuranamin (113) alongside two known steroidal alkaloids, cycloprotobuxine-D (114), and cycloprotobuxine-F (115). Compounds 114 and 115 have been isolated for the first time from B. macowanii. Structure of compounds 112-115 was elucidated with aid of UV, IR, mass, and 1D and 2D NMR spectroscopy. These compounds showed different level of anti-AChE activity. Among all the isolates, compound 112 was found to be significantly active against AChE with an IC50 value of 4.7 µM. The bioactivity of this new compound nearly comparable to those of huperzine (IC50 = 1.7 µM) and O2-natafuranamine (IC50 = 3.0 µM).
47

Nitrogen heterocycles in asymmetric synthesis

Treacy, Alan Bernard January 1996 (has links)
No description available.
48

The chemical investigation of the alkaloids obtained from Hernandia bivalvis and Crinum pendunculatum

Greenhalgh, Roy. Unknown Date (has links)
No abstract available
49

A convenient new method for the preparation of labeled aromatic compounds by hydrogen isotope exchange : studies of quinoline alkaloid biosynthesis /

Finlayson, Airdrie Cathcart. January 1975 (has links) (PDF)
Thesis (M.Sc.) -- University of Adelaide, Depart of Organic Chemistry, 1975.
50

Synthesis of phthalideisoquinoline alkaloids and of other antagonists of ¿-aminobutyric acid.

Tippett, James Morton. January 1977 (has links) (PDF)
Thesis (Ph.D. 1978) from the Department of Organic Chemistry, University of Adelaide.

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