Zobrazeno 1 - 10
of 34
pro vyhledávání: '"S. Fazal Hussain"'
Publikováno v:
Tetrahedron Letters. 21:4573-4576
The new aporphine-benzylisquinoline khyberine ( 4b ) is present in Berberis calliobotrys Aitch. ex Bienert in about one part per million. An effort is made to present a complete scheme for the biogenesis of aporphine-benylisoquinoline dimers which ar
Publikováno v:
Tetrahedron. 34:635-640
The new isoquinoline alkaloid (−)-peshawarine ( 1 ) has been isolated from Hypecoum parviflorum Kar. & Kir. (Papaveraceae). Its synthesis in the racemic form from coptisine ( 6b ) involves a novel approach to cyclic hemiacetals in which the key ste
Publikováno v:
Journal of Natural Products. 44:169-178
Autor:
S. Fazal Hussain, Maurice Shamma
Publikováno v:
Tetrahedron Letters. 21:3315-3318
Berberis orthobotrys produces the new dimer kalashine ( 1 ), together with the previously reported pakistanamine ( 2 ) and pakistanine ( 3 ). Kalashine is the first aporphine-benzylisoquinoline known to be substituted at C-11. Acid catalyzed rearrang
Autor:
S. Fazal Hussain, Maurice Shamma
Publikováno v:
Tetrahedron Letters. 21:1909-1912
(+)-Parviflorine ( 1 ), found in Fumaria parviflora Lam. (Fumariaceae), is the first known glycosidic spirobenzylisoquinoline alkaloid. Its acid hydrolysis yields (+)-parfumine ( 4 ) and D-glucose. Klyne's rule indicates that 1 is a β-D-glucoside. T
Publikováno v:
Journal of Natural Products. 46:251-255
Publikováno v:
Journal of Natural Products. 49:488-493
Publikováno v:
Tetrahedron Letters. 22:3127-3130
The dark yellow indenobenzazepine alkaloids lahorine ( 1 ) and lahoramine ( 2 ) have been found in Fumaria parviflora Lam. (Fumariaceae). In a transformation with biogenetic implications, treatment of the spirobenzylisoquinolines dihydrofumariline (
Autor:
S. Fazal Hussain, Mekin Tanker, Gábor Blaskó, Natesan Murugesan, Bilge Sener, Maurice Shamma, Robert D. Minard
Publikováno v:
Tetrahedron Letters. 22:3135-3138
Fumarofine is not a spirobenzylisoquinoline. Rather, it is the first know reduced indenobensazepine alkaloid, and possesses the cis B/C fused structure 7 . Rearrangement of synthetic spirobensylisoquinoline 12 using methanesulfonyl chloride furnished
Publikováno v:
Journal of Natural Products. 44:274-278