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WorksheetsAn Overview of Natural Products Chemistry
Total questions: 8
Worksheet time: 4mins
1. The followings are the examples of secondary metabolites, except...
a. flavonoid
b. triterpene
c. alkaloid
d. carbohydrate
2. Which of the following compounds is an antimalarial drug?
a. Emetine
b. Quinine
c. morphine
d. terpene
3. Which one is not the method of isolation?
a. extraction
b. fractination
c. elucidation
d. recrystallization
4. The oldest method for structure elucidation of natural products compound is....
a. X-ray diffraction
b. Chemical methods
c. NMR spectroscopy
d. Chemical metods +spectroscopy
5. What kind of spectroscopy is used to determine the unit of structure of a compound?
a. Mass Spectroscopy
b. FTIR
c. NOE-NMR
d. COSY
6. What spectroscopic method that give you information about the stereochemistry of a compound?
a. 1H NMR
b. NOESY
c. COSY
d. FT-IR
7. What is the characteristic 1H NMR chemical shift for aromatic proton?
a. 7.00 - 8.00 ppm
b. 1.00 - 3.00 ppm
c. 10.00 - 11.00 ppm
d. 0 - 1.00 ppm
8. The followings are the method used to determine the absolute configuration of a compound, except...
a. X-ray crystallography
b. Derivatization using MTPA
c. CD spectroscopy
d. HMBC
