Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Maktoob Alam"'
Publikováno v:
Journal of Natural Products. 59:890-893
An investigation of the indole alkaloids of Haplophyton crooksii has resulted in the identification of two new alkaloids10-methoxy-N1-methylpericyclivine (1) and 16-decarbomethoxyvinervinine (2)and 13 known alkaloidscrooksiine, yohimbine, β-yohimbin
Publikováno v:
ChemInform. 27
The present crystal structure determination established spiro[{3a,4,5,6,7,8,11,12,13,14,15,15a-dodecahydro-6,10,14-trimethyl-2-oxo-5,15-epoxy-3H-cyclotetradeca[b]furan}-3,3'-1'-pyrazoline]-6-yl acetate, C 23 H 34 N 2 O 5 , as a pyrazoline derivative
Publikováno v:
Spectroscopy Letters. 25:363-374
The methanolic extract of fresh and dried leaves of Buddleja davidii furnished a new iridoid glycoside, along with other known compounds. Spectroscopic techniques were utilized for the characterization of biridoside.
Publikováno v:
Phytochemistry. 30:1741-1744
Crooksiine, a new bisindole alkaloid with antiacetylcholinesterase activity was isolated from Haplophyton crooksii . Its structure was established utilizing spectrometric methods.
Publikováno v:
Acta crystallographica. Section C, Crystal structure communications. 52
The present crystal structure determination established spiro[{3a,4,5,6,7,8,11,12,13,14,15,15a-dodecahydro-6,10,14-trimethyl-2-oxo-5,15-epoxy-3H-cyclotetradeca[b]furan}-3,3'-1'-pyrazoline]-6-yl acetate, C 23 H 34 N 2 O 5 , as a pyrazoline derivative
Publikováno v:
Journal of natural products. 59(4)
A new tricyclic sesquiterpeneisoculmorinwas isolated from the marine fungus Kallichroma tethys and its structure determined by X-ray crystallography.
Autor:
Radhika Sanduja, Gary E. Martin, Ghuman Ma, Alfred J. Weinheimer, Andrew S. Zektzer, Maktoob Alam
Publikováno v:
Journal of natural products. 56(5)
A novel cyroroxic cembranoid, planaxool [1], was isolated from the marine mollusk Planaxis sulcatus, and its structure determined by 2D nmr spectroscopy
Autor:
M. B. Hossain, Shridhar Iyer, Maktoob Alam, Radhika Sanduja, Dick Van der Helm, Thomas L. Lemke, Mohamad M. Mroue
Publikováno v:
Journal of pharmaceutical sciences. 79(9)
Two indencarbazates, 1 and 2, were isolated from the sponge Cliona caribboea. These compounds were found to possess mild hypotensive activity. A series of analogues of 1 was synthesized in order to study the structure–activity relationship of this
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 41:1199-1202
Cristallisation dans PZ 1 Z 1 Z 1 avec Z=4 ; affinement jusqu'a R=0,035. Le systeme a trois cycles condenses est parfaitement plan. Longueurs et angles de liaison du cycle tetrazole et du groupe azoturo en bon accord avec ceux des structures apparent
Autor:
Maktoob Alam, Edward L. Ezell, Gary S. Linz, Alfred J. Weinheimer, Radhika Sanduja, Gary E. Martin
Publikováno v:
Journal of Heterocyclic Chemistry. 23:529-535
Numerous cembranoic diterpenes have been isolated from marine gorgonians and terrestrial plants. There have, however, been only a few reports of the isolation and identification of these interesting compounds from higher animal sources. The isolation