LYCOPODIUM ALKALOIDS: II SOME REACTIONS OF THE PERMANGANATE OXIDATION PRODUCT OF ANOTININE

1953 ◽  
Vol 31 (6) ◽  
pp. 543-549 ◽  
Author(s):  
David B. MacLean ◽  
H. C. Prime

The permanganate oxidation product of annotinine is shown to be an amide that contains the ether ring of annotinine still intact. The Clemmensen reduction of this compound to the saturated base, C16H23O2N, was re-examined. A number of intermediates were isolated from the system and these were also prepared from the oxidation product by other methods. Analogous reactions of annotinine chlorohydrin were also studied. From these results suggestions are presented regarding the size of the ether ring and its position relative to the nitrogen atom.


1959 ◽  
Vol 37 (10) ◽  
pp. 1757-1763 ◽  
Author(s):  
D. B. MacLean ◽  
W. A. Harrison

Information pertaining to the position of the carbonyl group relative to the nitrogen atom and to the size of one of the nitrogen rings in lycopodine has been obtained through a study of the reactions of α- and β-cyanobromolycopodine.



1956 ◽  
Vol 34 (11) ◽  
pp. 1519-1527 ◽  
Author(s):  
L. R. C. Barclay ◽  
David B. MacLean

The hydrogenolysis and hydrolysis of α-cyanobromolycopodine to the secondary tricyclic base, α-des-dihydrolycopodine, is reported. The latter compound was converted to the methiodide in poor yield so that further degradations of the molecule through this derivative were not feasible. Hydride reductions of α-cyanobromolycopodine and some of its derivatives are recorded. The presence of a methylene group adjacent to the carbonyl group in lycopodine has been proved. Evidence is presented which suggests that the carbonyl group and the nitrogen atom are relatively close to one another in the molecule.



1957 ◽  
Vol 35 (3) ◽  
pp. 236-250 ◽  
Author(s):  
Wm. H. Brown ◽  
George F Wright

The reaction of 2-chloromercurifuran with t-butyl bromide does not yield 2-t-butylfuran. Instead 2,5-di-t-butylfuran, 2,2,7,7-tetramethyloctane-3,6-dione, and 2-t-butyl-5-[2,4,4-trimethyl-2-pentyl]furan are produced. Air-oxidation of di-t-butylfuran yields trans-2,2,7,7-tetramethyl-4-octene-3,6-dione (converted to the cis isomer photochemically) which forms a dibromide identical with the dibromo substitution product from tetramethyloctanedione. Cold nitric acid oxidation of di-t-butylfuran or tetramethyloctanedione yields 4-hydroxy-5-isonitroso-2,2,7,7-tetramethyloctane-3,6-dione, but hot nitric acid oxidation of the tetramethyloctanedione yields the expected 2-trimethylacetyl-5-t-butylisoxazole. The corresponding oxidation product of t-butyltrimethylpentylfuran has not been identified, although it yields 2,2,4,4-tetramethylpentanoic acid, indicative of the isoöctyl substituent, upon hydrolysis. The same acid is obtained by permanganate oxidation of Friedel–Crafts-synthesized 2,5-di-[2,4,4-trimethyl-2-pentyl]furan, a compound which yields trans-2,2,4,4,9,9,11,11-octamethyl-6-dodecene-5,8-dione.



1960 ◽  
Vol 8 (9) ◽  
pp. 844-844 ◽  
Author(s):  
Masaichi Yasue ◽  
Yoshishige Kato


1982 ◽  
Vol 104 (17) ◽  
pp. 4676-4677 ◽  
Author(s):  
S. William Pelletier ◽  
Jan A. Glinski ◽  
Naresh V. Mody




1963 ◽  
Vol 13 (8) ◽  
pp. 346-347
Author(s):  
G. E. Risinger ◽  
J. A. Thompson
Keyword(s):  




2008 ◽  
Vol 128 (10) ◽  
pp. 615-618 ◽  
Author(s):  
Takeshi Kitajima ◽  
Akihiro Kubota ◽  
Toshiki Nakano


Sign in / Sign up

Export Citation Format

Share Document