Synthetic Rubber Made Equal to Natural Product

1933 ◽  
Vol 24 (651) ◽  
pp. 219
Keyword(s):  
Natural Product ◽  
Synthetic Rubber

The Weber Color Test for the Identification of Natural Rubber

1945 ◽  
Vol 18 (4) ◽  
pp. 902-904 ◽  
Author(s):  
I. F. C. Parker ◽  
W. C. Wake
Keyword(s):  
Organic Chemistry ◽  
Positive Result ◽  
Natural Rubber ◽  
Natural Product ◽  
Color Test ◽  
Gutta Percha ◽  
Synthetic Rubber ◽  
Violet Color ◽  
Color Reactions ◽  
Rubberlike Materials

Abstract The Weber color reaction, mentioned in a recent note, has become of importance in detecting natural rubber in mixtures in which it may be considerably diluted with synthetic rubber or nonrubber materials. The detailed instructions for carrying out the test are given elsewhere, and Stern has published a table which shows also the colors obtained when the test is applied to rubbers other than the natural product. It is clear from this table, and is confirmed by our experience, that the strong violet color developed is distinctive for natural rubber and gutta-percha, provided that the material has been extracted with acetone. However, color reactions in organic chemistry are rarely found to be as specific as earlier workers have claimed, and work is being carried out in these laboratories to establish the limitations of the reaction when applied to rubberlike materials. With very few exceptions, synthetic rubbers and rubberlike materials available at present do not give a positive result with this test, although very faint violet colors, which cannot be confused with a positive result, are sometimes obtained. Those giving any violet color are listed in Table I.

Synthetic studies toward inducamide C

2021 ◽  
Author(s):  
Ardalan A. Nabi ◽  
Lydia M. Scott ◽  
Daniel P. Furkert ◽  
Jonathan Sperry
Keyword(s):  
Natural Product ◽  
Structural Revision ◽  
Synthetic Studies

The rare benzoxazepine ring in the alkaloid inducamide C is unstable and prone to rearrangement, indicating that structural revision of the natural product may be necessary.

Lessons learned from the optimization of natural product based kinase inhibitors through molecular calculations

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
V Myrianthopoulos ◽  
P Magiatis ◽  
AL Skaltsounis ◽  
L Meijer ◽  
E Mikros
Keyword(s):  
Natural Product ◽  
Kinase Inhibitors ◽  
Lessons Learned ◽  
Molecular Calculations

New Antileishmanial Drug Leads from a Library of Natural Product Fractions Prepared by a High Throughput Fractionation Paradigm*

Planta Medica ◽  
2012 ◽  
Vol 78 (05) ◽  
Author(s):  
SK Jain ◽  
R Sahu ◽  
J Zhang ◽  
MR Jacob ◽  
XC Li ◽  
...  
Keyword(s):  
Natural Product ◽  
High Throughput ◽  
Antileishmanial Drug ◽  
Drug Leads

High throughput huaman pancreactic lipase screening of natural product library for lipase inhibition activity

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
P Jiao ◽  
J Zhao ◽  
J Yeop Lee ◽  
J Tseng-Crank ◽  
B Corneliusen ◽  
...  
Keyword(s):  
Natural Product ◽  
High Throughput ◽  
Inhibition Activity ◽  
Natural Product Library ◽  
Lipase Screening ◽  
Lipase Inhibition
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