FACULTY OF PHARMACY
M. Pharmacy (Pharmacognosy) I-Semester (Suppl.) Examination, August
2018
Subject: Phytochemistry
Time: 3 Hours Max. Marks: 75
Note: Answer any five questions. All questions carry equal marks.
1 Write the definition and principles of extraction and types of extracts. Describe
various extraction techniques with principles, merits and demerits. 15
2 Explain the instrumental technique and applications of 7+7
Super critical Fluid extraction technique.
HPTLC
3 Describe the concept of tracer technique and discuss the methods of detectors
used in tracer technique.
Write the chemistry of Glycyrrhizin. 10+5
4 Discuss the importance of natural products in discovery of drugs. 7+7
(b)Explain the selection of lead structure and optimization.
5 Give the source, spectral characters and structural elucidation of Caffeine. 15
6 Write about
Biosynthesis of sennosides.
Phases of clinical studies
(iii)Chemistry of artemesin.
7 Give the source, Chemical structure and isolation of
Piperine Quinine Caffeine
8 Write the sources, chemistry and mechanism of action of
Digitoxin Vinca alkaloids Taxol