Beckmann Rearrangement. I. Syntheses of Oxime p-Toluenesulfonates and Beckmann Rearrangement in Acetic Acid, Methyl Alcohol and Chloroform

1958 ◽  
Vol 80 (21) ◽  
pp. 5880-5885 ◽  
Author(s):  
Walter Z. Heldt
Keyword(s):  
Acetic Acid ◽  
Methyl Alcohol ◽  
Beckmann Rearrangement ◽  
Acid Methyl

A modification of Heidenhain's iron-haematoxylin technique, as used to stain smears of Drosophila larval polytene chromosomes and neuroblast cells

1971 ◽  
Vol 49 (1) ◽  
pp. 132-133 ◽  
Author(s):  
Albert E. Moorman
Keyword(s):  
Acetic Acid ◽  
Salivary Gland ◽  
Methyl Alcohol ◽  
Polytene Chromosomes ◽  
Larval Salivary Gland

Acetic-acid-fixed smears of Drosophila larval salivary gland chromosomes and of neuroblast cells from the larval ganglion undergoing mitosis are prepared by a modification of Heidenhain's iron-haematoxylin technique, in which absolute methyl alcohol is the solvent of all reagents used in the staining process.

Cytotoxic constituents of Alocasia macrorrhiza

2017 ◽  
Vol 72 (1-2) ◽  
pp. 21-25 ◽  
Author(s):  
Marwa Elsbaey ◽  
Kadria F.M. Ahmed ◽  
Mahmoud F. Elsebai ◽  
Ahmed Zaghloul ◽  
Mohamed M.A. Amer ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Spectroscopic Data ◽  
Human Cancer ◽  
Indole Alkaloid ◽  
Acid Methyl Ester ◽  
2D Nmr ◽  
Human Cancer Cell ◽  
Human Cancer Cell Lines ◽  
Acid Methyl ◽  
First Time

AbstractAn indole alkaloid, 2-(5-hydroxy-1H-indol-3-yl)-2-oxo-acetic acid (1) isolated for the first time from nature, in addition to the nine known compounds 5-hydroxy-1H-indole-3-carboxylic acid methyl ester (2), alocasin B (3), hyrtiosin B (4), α-monopalmitin (5), 1-O-β-D-glucopyranosyl-(2S, 3R, 4E, 8Z)-2-[(2(R)-hydroctadecanoyl) amido]-4,8-octadecadiene-1,3-diol (6), 3-epi-betulinic acid (7), 3-epi-ursolic acid (8),β-sitosterol (9) andβ-sitosterol 3-O-β-D-glucoside (10) were isolated from the rhizomes ofAlocasia macrorrhiza(Araceae). Their structures were elucidated by 1D and 2D NMR spectroscopic data. Of these compounds,6exhibited the strongest cytotoxicity against the four tested human cancer cell lines (IC50of about 10 µM against Hep-2 larynx cancer cells).

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