Pharmacognosy Study Notes: Steroids, Cardiac Glycosides & Triterpenoids
Download PDF Notes covering essential questions from B.Pharm Semester 5 Pharmacognosy 2. Includes hand-written notes on:
- Triterpenoids classification and extraction
- Cardiac glycosides identification tests
- Digitalis cultivation and chemical analysis
- Dioscorea constituents and uses
Keywords: Pharmacognosy PDF download, B.Pharm notes, Semester 5 study material, Cardiac glycosides PPT, Triterpenoids questions bank, Pharmacy college notes
Comprehensive Study Guide: Steroids, Cardiac Glycosides & Triterpenoids
This detailed pharmacognosy resource covers critical topics for fifth semester B.Pharm students, featuring 20 essential questions with in-depth explanations:
1. Triterpenoids Fundamentals
Triterpenoids are a class of chemical compounds composed of six isoprene units with 30 carbon atoms. They're classified into:
- Triterpene alcohols: e.g., Cycloartenol
- Steroids: Derived from triterpenes, includes cardiac glycosides
- Saponins: Glycosylated triterpenoids with foaming properties
2. Cardiac Glycosides Analysis
These cardioactive compounds are extracted through solvent extraction methods. Key identification tests include:
- Keller-Killiani test for deoxy sugars
- Legal's test for enolic groups
- Baljet's test for lactone rings
3. Digitalis Pharmacognosy
Derived from Digitalis purpurea, this important cardiac drug contains:
- Primary constituents: Digitoxin, Gitoxin
- Cultivation methods: Requires well-drained soil and partial shade
- Chemical structure: Steroid nucleus with lactone ring
4. Dioscorea Case Study
The Mexican yam (Dioscorea composita) is crucial for steroid synthesis:
- Contains diosgenin (up to 15%)
- Extraction through acid hydrolysis
- Used in contraceptive drug synthesis
This 85-page guide includes detailed extraction flowcharts, chemical structure diagrams, and comparative analysis of allied drugs. Perfect for exam preparation and practical pharma applications.
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