I= CHEMICAL CONSTITUENTS OF LAURENCIA PINNATIFIDA AND SYNTHETIC STUDIES ON FUJENAL AND GIBBERELLINS
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Title of Thesis
CHEMICAL CONSTITUENTS OF LAURENCIA PINNATIFIDA AND SYNTHETIC STUDIES ON FUJENAL AND GIBBERELLINS

Author(s)
M. Shaiq Ali
Institute/University/Department Details
University of Karachi./H.J.E. Research Institute of Chemistry
Session
1991
Subject
Chemistry
Number of Pages
168
Keywords (Extracted from title, table of contents and abstract of thesis)
laurencia pinnatifida, fujenal, gibberellins, seaweeds, algae, sea vegetables, genus laurencia, diterpenoids

Abstract

Download Full Thesis
1342.02 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 Contents/ Summary
102.17 KB
2 1 The Seaweed 7
118.19 KB
  1.1 Introduction 8
  1.2 History of the study of seaweeds 8
  1.3 Classification of algae 9
  1.4 Distribution 10
  1.5 Economic aspects 11
  1.6 Sea vegetables 12
  1.7 Seaweeds as animal fodder, fertilizers and fuel 15
  1.8 Food value 16
  1.9 Seaweeds in medicine 16
  1.10 Industrial uses of seaweeds 17
  1.11 Aspects in Pakistan 18
3 2 Marine natural products 19
515.7 KB
  2.1 Introduction 20
  2.2 Research on marine natural products chemistry 20
  2.3 Genus laurencia 21
  2.4 Literature survey of the sesquiterpenoids isolated From genus laurencia 23
  2.5 Literature survey of the sesquiterpenoids isolated From L. pinnatifida 41
  2.6 What are terpennes? 42
  2.7 Biosynthesis of sesquiterpenoids 42
4 3 Lsurencia Pinnatifida (HUDS.) Lamour 56
219.08 KB
  3.1 Structure elucidation of pinnatifidone (49) 57
  3.2 Structure elucidation of compound 50 63
  3.3 Structure elucidation of pinnatifinone (51) 65
  3.4 Structure elucidation of laurol (54) 68
  3.5 Structure elucidation of Pinnatifenol (55) 70
  3.6 Structure elucidation of Pinnatazane (57) 73
  3.7 Structure elucidation of Pinnatifolide (58) 78
  3.8 Structure elucidation of compound 59 81
  3.9 Structure elucidation of compound 60 83
  3.10 Structure elucidation of compound 61 85
  3.11 Structure elucidation of compound 62 87
5 4 Experimental 90
154.32 KB
  4.1 General Notes 90
  4.2 Collection and identification of alga 91
  4.3 Extraction and isolation 91
  4.4 Isolation and characterization of pinnatifidone (49) 92
  4.5 Isolation and characterization of compound 50 93
  4.6 Isolation and characterization of pinnatifinone (51) 94
  4.7 Isolation and characterization of laurol (54) 95
  4.8 Isolation and characterization of Pinnatifenol (55) 96
  4.9 Isolation and characterization of Pinnatazane (57) 97
  4.10 Isolation and characterization of pinnatifolide (58) 104
  4.11 Isolation and characterization of compound 59 105
  4.12 Isolation and characterization of compound 60 106
  4.13 Isolation and characterization of compound 61 107
  4.14 Isolation and characterization of compound 62 108
6 5 The partial synthesis of diterpenoids from fujenal having potential Antitumour activity 110
283.93 KB
  5.1 Introduction 111
  5.2 Preparation of ent-15-oxo-16-en-6 ,7 -secokaur-7-hydroxy-6 19dioic acid, 6-7 lactone 19methyl ester (75) 113
  5.3 Preparation of ent-15-oxo-7, 19dihydroxy-16-en-6 ,7 -secoakure-6-19 lactone 7-acetate (79) 119
  5.4 Antitumour activity test 121
  5.5 Experimental 123
7 6 The esterification of Gibberellins with dimethyl formamide dimethyl acetal ( DMFDMA) 133
69.54 KB
  6.1 The gibberellins 133
  6.2 Esterification of gibberellins 133
  6.3 Utility of DMFDMA 134
  6.4 Results and Discussion 136
  6.5 Experimental 143
8 7 Miscellaneous studies 149
88.87 KB
  7.1 Results and Discussion 149
  7.2 Experimental 153
  7.3 Literature cited 156
  7.4 List of publications 167