Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 14451 for “"Synthesis"”.
-
Synthesis
This thesis is an investigation of place. The project is a vehicle which informs how the variables of site and program can be developed into place. Through the production of tangible work the architect may verify whether the creation of place is successful. The analysis of this outcome can enhance …
-
Design and synthesis of handles for solid-phase peptide synthesis and convergent peptide synthesis
… popularity of methods for solid-phase peptide synthesis that use the 9-fluorenylmethyloxycarbonyl (Fmoc) group for N<sup>α</sup>-amino protection has created a need for compatible anchoring linkages and handles. In an effort to develop mild new methods for use in solid-phase peptide synthesis …
-
Synthesis of Chiral Surfactants for Enantioselective Organic Synthesis.
<p>The first step of the synthesis of the hydrocarbon-based chiral surfactant <b>(2)</b> involved the methylation of (S)-leucinol to give (2S)-N-hexadecyl-N,N-dimethyl-(1-hydroxy-4-methyl-1-pentyl)-2-ammonium bromide (2.92g, 67%). The chiral surfactant was synthesized by reacting …
-
Total synthesis of (-)-tantazole B. Total synthesis of (+,-)-FR900482
… to the synthetic chemists. The first total synthesis and structure revision of ($-$)-tantazole B is described herein. A convergent methodology is developed and could be applied to the synthesis of the other members of oxazole/thiazoline family.(DIAGRAM, TABLE OR GRAPHIC OMITTED...PLEASE SEE …
-
EXPLORATIONS IN MEDIUM-RING ETHER SYNTHESIS VIA UMPOLUNG HETEROATOM ACTIVATION: TOTAL SYNTHESIS, METHODS DEVELOPMENT, AND REAGENT SYNTHESIS
… alcohols.This dissertation provides the unified synthesis and isolation of various electronically and sterically distinct N-HVIs to promote their continued investigation in the Wengryniuk group as well as synthetic groups across the globe. Additionally, synthetic efforts toward natural product …
-
The effect of synthesis and post-synthesis modifications on the activity of zeolite beta for cumene synthesis
… carried out on other zeolite types, that post synthesis modifications such as dealumination of the zeolite framework tend to enhance the activity of these zeolites for catalytic reactions. Moreover, the effect of synthesis parameters on the catalytic activity of zeolite Beta is an important …
-
Studies on Solid-Phase Peptide Synthesis: The Synthesis of Glucagon
… stepwise-solid phase approach was studied in the synthesis of the peptide hormone glucagon. The choice of this molecule was based upon: (1) the unusual chemical structure; (2) biological significance. The main features of the strategy employed are: (1) the use of Biphenylisopropyloxycarbonyl group …
-
Phosphate Tethers in Synthesis: The Total Synthesis of Dolabelide C.
The utilization of phosphate tethers in synthesis is the focus of the dissertation research described herein. Specifically, cross metathesis of various olefin partners with a phosphate tether has been demonstrated. These studies established the Type III olefin reactivity of the exocyclic olefin of …
-
Synthesis of Hydrazine
Made available in DSpace on 2015-05-12T17:02:33Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0013525.PDF: 5050804 bytes, checksum: daaf445452ae47c4f51dbf5b40f7726a (MD5) Previous issue date: 1955
-
Antenna Pattern Synthesis
Made available in DSpace on 2014-12-04T21:02:33Z (GMT). No. of bitstreams: 1 0003133.pdf: 5113231 bytes, checksum: be923674dbf03f454f8ac79a87043c56 (MD5) Previous issue date: 1951
-
Synthesis of verrucarins
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1984.
-
Microfluidic gene synthesis
… emerging field of synthetic biology, from the synthesis of large sets of novel proteins to the complete re-writing of bacterial genomes. However, the current cost of de novo synthesis--driven largely by reagent and handling costs-is a significant barrier to the widespread availability of such …
-
Synthesis of safranal
Thesis (B.S.) Massachusetts Institute of Technology. Dept. of Chemistry, 1952.
-
Controllable Visual Synthesis
… we address the problem of controllable image synthesis. We propose several approaches that allow the user to synthesize realistic content and manipulate images to achieve their desired goals with ease and flexibility.
-
Propionyl holocarboxylase synthesis
… rats, catalyzes the ATP-dependent synthesis of propionyl holocarboxylase from d-biotin and propionyl apocarboxylase. This system has been resolved by alumina C<sub>∂</sub> gel fractionation into two essential components; (a) gel supernatant which contains propionyl apocarboxylase …
-
APPROACHES TO THE TOTAL SYNTHESIS OF DICTYOSTATIN AND SYNTHESIS OF EPI-DICTYOSTATINS
… I report on a highly stereoselective total synthesis of (+)-9-epi-dictyostatin, whose key steps is the coupling reaction between two fragments, C1-C9 and C10-C26, followed by Yamaguchi macrolactonization and global deprotection. Eleven stereogenic centers and four stereogenic double bonds …
-
Towards the total synthesis of 14-acetoxygelsenicine and synthesis of largazole analogs
… beginning with studies towards the total synthesis of 14-acetoxygelsenicine. We have developed different strategies towards this complex natural product, wherein we have developed routes towards an appropriate substrate for a novel, intramolecular hetero Diels-Alder cyclization. The …
-
Design and Synthesis of CB1 Receptor Ligands and Synthesis of Amphibian Alkaloids
… Our research group has been interested in the synthesis of amphibian alkaloids due to their interesting biological activities. We have recently developed a general synthetic strategy which can rapidly prepare a few amphibian alkaloids simply from the abundant natural product (-)- cocaine This …
-
The asymmetric synthesis of enol phosphates and their application in total synthesis
The synthesis of a wide range of highly valuable enol phosphate products has been carried out. The use of carbon centred magnesium bases, previously developed in the group has allowed the formation of kinetic enol phosphate products under room temperature conditions. By applying specific quench …
Page 1 of 723