Synthesis of Naturally Occurring Antitumor Agents:  Stereocontrolled Synthesis of the Azabicyclic Ring System of the Azinomycins

1999 ◽  
Vol 121 (39) ◽  
pp. 9088-9095 ◽  
Author(s):  
Robert S. Coleman ◽  
Jian-She Kong ◽  
Thomas E. Richardson
Keyword(s):  
Antitumor Agents ◽  
Ring System ◽  
Naturally Occurring ◽  
Stereocontrolled Synthesis

Stereocontrolled Synthesis of the DE Ring System (I) of the Marine Alkaloid Upenamide (II).

ChemInform ◽  
2006 ◽  
Vol 37 (13) ◽  
Author(s):  
Kurt Kiewel ◽  
Zhushou Luo ◽  
Gary A. Sulikowski
Keyword(s):  
Ring System ◽  
Marine Alkaloid ◽  
Stereocontrolled Synthesis

Stereocontrolled Synthesis of the DE Ring System of the Marine Alkaloid Upenamide

2005 ◽  
Vol 7 (23) ◽  
pp. 5163-5165 ◽  
Author(s):  
Kurt Kiewel ◽  
Zhushou Luo ◽  
Gary A. Sulikowski
Keyword(s):  
Ring System ◽  
Marine Alkaloid ◽  
Stereocontrolled Synthesis

Some Transformations of Adducts of 3,6-Dimethoxy-4,5-methylenedioxy-1,2-didehydrobenzene and Furans. An Approach to the 5,8-Dimethoxy-6,7-methylenedioxynaphtho[2,3-c]furan-4,9-dione Ring System of Ventilone A

1998 ◽  
Vol 51 (5) ◽  
pp. 409 ◽  
Author(s):  
Jarrod H. Buttery ◽  
Dieter Wege
Keyword(s):  
Ring Opening ◽  
Ring System ◽  
Subsequent Oxidation ◽  
Naturally Occurring

Adducts derived from the aryne 3,6-dimethoxy-4,5-methylenedioxy-1,2-didehydrobenzene (19) with furan and 2-methoxyfuran have been converted into 5,8-dimethoxy-6,7-methylenedioxy-1,2-naphthoquinone (22) and 5,8-dimethoxy-6,7-methylenedioxy-1,4-naphthoquinone (24) respectively. The trapping of (19) with 1H,3H-furo[3,4-c]furan (38) yielded an unstable adduct (37), which on acid-catalysed ring opening and subsequent oxidation was transformed into 5,8-dimethoxy-6,7-methylenedioxynaphtho[2,3-c]furan-4,9-dione (36), a compound possessing the ring system of the naturally occurring quinone ventilone A.

Antitumor agents 200.1 cytotoxicity of naturally occurring resveratrol oligomers and their acetate derivatives

1999 ◽  
Vol 9 (20) ◽  
pp. 3057-3060 ◽  
Author(s):  
Masayoshi Ohyama ◽  
Toshiyuki Tanaka ◽  
Tetsuro Ito ◽  
Munekazu Iinuma ◽  
Kenneth F. Bastow ◽  
...  
Keyword(s):  
Antitumor Agents ◽  
Naturally Occurring
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