M.Sc. DEGREE EXAMINATION, FEBRUARY 2018.
Fourth semester
Chemistry
Paper IV TERPENOIDS, STEROIDS, ALKALOIDS AND FLAVONOIDS
(Non CBCS Old Regulation)
2 20144
Time 3 Hours Max. Marks 75
PART — A
Answer any FIVE questions. 5 25 Marks)
1. Explain isoprene rule with a suitable example.
2. Write the occurrence and isolation of farnesol.
3. Explain the role of alkaloids in plants.
4. Write a note on the biosynthesis of reserpine.
5. Write the occurrence and isolation of Estrone.
6. Explain the role of cholesterol in human body.
7. Write the occurrence and isolation of Daidzein.
8. Explain the biosynthesis of flavonoids.
PART — B
Answer ALL questions. 2
12 1 50 Marks)
9. Explain the structural dermination of santonin.
Or
10. Explain stereochemistry and synthesis of zingiberine.
11. Explain the structural elucidation of strychnine.
Or
12. Explain the structural elucidation of reserpine.

13. Explain the occurrence and biosynthesis of cholesterol.
Or
14. Explain the structural elucidation of testosterone.
15. Explain acetate pathway and shikimic acid pathway.
Or
16. Explain the structural elucidation of Luteolin and Quercetin.