etd AT Indian Institute of Science: Recent submissions
Now showing items 501-520 of 9224
-
Synthetic studies on terpenoids
The thesis entitled “Synthetic Studies on Terpenoids” consists of four chapters. Chapter I presents a brief review on the reduction of aromatic substrates with metal-ammonia solutions and applications of the resulting ... -
Metabolism of R-(+)-menthofuran in rats : Its relevance to R-(+)-pulegone mediated toxicity
Metabolism of R-(+)-Menthofuran In Vivo and In Vitro: Its Relevance to R-(+)-Pulegone Mediated Toxicity Pennyroyal oil from Mentha pulegium is widely used as a flavoring agent and also as a herbal medicine to terminate ... -
Radical cyclisation routes to terpenes and furans
The thesis entitled “Radical Cyclisation Routes to Terpenes and Furans” consists of three chapters. Chapter I This chapter describes various aspects of radical cyclisation reactions (eq. 1) along with examples of their ... -
Total synthesis of sesquiterpenes containing multiple quarternary carbons
The synthesis of (±)-3a,4,4,7a-tetramethylhydrindan-2-one containing three contiguous quaternary carbons as present in thapsanes; first total synthesis of thapsanes 00 and 5, probable biogenetic precursors of thapsanes; ... -
Synthetic investigations in terpenoids: total synthesis of (+)-allo-cedrol (Khusiol) and Illudinine
The thesis entitled "SYNTHETIC INVESTIGATIONS IN TERPENOIDS: TOTAL SYNTHESIS OF (±)—ALLO-CEDROL [KHUSIOL] AND ILLUDININE" consists of two chapters. The Chapter I deals with the total synthesis of the sesquiterpene ... -
synthesis of some terpenic and other natural products of plant and marine origin
The thesis entitled, "Synthesis of Some Terpenic and Other Natural Products of Plant and Marine Origin", consists of eight chapters. Chapter 1 describes the first synthesis of two naturally occurring dehydrothymol derivatives ... -
Crystal and molecular structures of some molecules of biological interests and moderately strained organic molecules
The thesis entitled “The Crystal and Molecular Structures of Some Molecules of Biological Interest and Moderately Strained Organic Molecules” consists of two parts: Part One deals with biologically important molecules and ... -
Synthetic studies in steroids : total synthesis of substituted hydrobenz(E)-indene hydrophenanthrene and 11cc-cyano-D-homoequilenen methyl ether
The thesis entitled “SYNTHETIC STUDIES IN STEROIDS — TOTAL SYNTHESIS OF SUBSTITUTED HYDROBENZ[E]INDANE, HYDROPHENANTHRENE AND 11??HOMO?EQUILINEN METHYL ETHER” consists of five chapters. In Chapter I, various methods ... -
synthetic and structural studies in terpenoids
The thesis entitled “Synthetic and Structural Studies in Terpenoids” consists of three chapters. Chapter I deals with synthetic studies on diterpenoids calyenone (1), calyone (2), and precalyone (3) isolated from Roylea ... -
biodegration of monoterpenes by pseudomonas incognita
Terpenoids are ubiquitous in nature. Some soil microorganisms, especially species belonging to Pseudomonas, have the ability to utilize terpenes as the sole source of carbon and energy. This process of mineralization helps ... -
Investigations towards the total synthesis of natural and modified steroids
Thesis Entitled: “Investigations Towards the Total Synthesis of Natural and Modified Steroids” The thesis is presented in four chapters. Chapter 1 describes the synthesis of a novel synthon, 2,6,7,7a-tetrahydro-1-tert- ... -
Studies in sesquiterpenes
Sesquiterpenes of the Azulene Type It has long been known that some plants yield blue-coloured essential oils. The blue colour of chamomile oil was first observed in the fifteenth century. In 1923, Ruzicka, Pontalti and ... -
Metal-ammonia reductions and synthesis of steroid hormone analogues
The thesis entitled "METAL-AMMONIA REDUCTIONS AND SYNTHESIS OF STEROID HORMONE ANALOGUES" consists of three chapters. Chapter I has been divided into four sections. Section I is a brief review on the hydrogenation of ... -
Studies on enzyme models
The thesis is divided into three chapters. The first chapter is a general introduction on the mechanism of enzyme action and a few model systems. The second chapter deals with the design, synthesis, and kinetic studies on ... -
Studies on enzyme models
The thesis is subdivided into three main chapters. The first chapter deals with a general introduction on the mechanism of enzyme action and the study of enzyme models mimicking some enzymes. The second chapter consists ... -
Some reactions of oximes and related topics.
The thesis has been divided into four chapters: Chapter 1 – Acid-Catalyzed Reactions of Oxime Derivatives Although vinylhydroxylamine derivatives (2) have been implicated as intermediates in the Wolff–Semmler aromatization ... -
X-ray crystallographic investigation of some biologically important molecules
The thesis entitled “X-ray Crystallographic Investigation of Some Biologically Important Molecules” consists of two parts. Part I, with four chapters, deals with the structure and conformation of a dipeptide, glycyl-DL-p ... -
studies in natural products
The thesis entitled “Studies in Natural Products: Essential Oil of Ageratum conyzoides and Transformation of One of Its Constituents to ?-Norsteroid Derivatives” consists of two parts. Part I Chapter I deals with the ... -
synthetic investigations in steriods
he thesis entitled “Synthetic Investigations in Steroids” consists of two chapters and a short appendix. Each chapter has been divided into two sections. Chapter I Section A is a review of the chemistry of ...