Synthetic studies towards total synthesis of bielschowskysin 2
Synthetic studies towards total synthesis of bielschowskysin 2
... natural products, we have begun studies towards the total synthesis of Our approach is to mimic the biosynthesis of by the [2+ 2] photo-cycloaddition of allenyl -2( 5H)furanone 157 under high stereocontrol ... stereocontrol to form the tricyclic core27 (Figure 2. 1) Figure 2. 1: Proposed model study of the tricyclic core of bielschowskysin 2. 2 Model Study: [2+ 2] Cyclo...
Ngày tải lên: 11/09/2015, 09:13
Synthetic studies towards total synthesis of bielschowskysin 1
... lophotoxin and 11 pukalide x Scheme 1. 9 Marshall’s synthesis of the furan moiety of rubifolide 11 Scheme 1. 10 Marshall’s synthesis of furan moiety from an alkynone β-ketoester 11 Scheme 1. 11 Paquette’s ... Characterisation 1. 1.2 Biological Activity 1. 1.2 .1 Antimalarial Agents and Continuing Needs 1. 1.3 Proposed Biosynthesis 1. 1.4 Related Diterpene Natural Pro...
Ngày tải lên: 11/09/2015, 09:13
Synthetic studies towards total synthesis of bielschowskysin 4
Ngày tải lên: 11/09/2015, 09:13
Part 1 total synthesis and biological evaluation of antillatoxin and fragments part II synthetic studies towards the total synthesis of cytochalasans and tuberostemonine
... PART I TOTAL SYNTHESIS AND BIOLOGICAL EVALUATION OF ANTILLATOXIN AND FRAGMENTS PART II SYNTHETIC STUDIES TOWARDS THE TOTAL SYNTHESIS OF CYTOCHALASANS AND TUBEROSTEMONINE APPENDIX ... Biological Evaluation of Antillatoxin and Fragments 1. 1 Historical Background 1. 2 Previous Synthetic Studies 1. 3 Our Retrosynthetic Analysis of...
Ngày tải lên: 16/09/2015, 08:31
synthetic studies toward the total synthesis of amphidinolide b1
Ngày tải lên: 14/11/2014, 09:37
Synthetic studies towards sieboldine a and a macrocyclic precursor of bielschowskysin
... DOOHQHV DQG SURSDUJ\OLF DOFRKROV 6FKHPH 3UHSDUDWLRQ RI WHUWLDU\ DOFRKRO 6FKHPH )RUPDWLRQ RI WKH SURSDU\OLF DOFRKRO ... 6LHEROGLQH $ D /\FRSRGLXP DONDORLG ZLWK DFHW\OFKROLQH HVWHUDVH LQKLELWRU\ SURSHUWLHV DUH SUHVHQWHG DORQJ ZLWK D VKRUW LQWURGXFWLRQ WR WKH LPSRUWDQFH RI DFHW\OFKR...
Ngày tải lên: 09/09/2015, 10:15
Part i synthesis of photochromic fulgides part II synthetic studies towards anti SARS agent AG7088
... PHOTOCHROMIC FULGIDES 17 PART I CHAPTER Synthesis of Model Fulgides CHAPTER – SYNTHESIS OF FULGIDES 2.1 PRELIMINARY SYNTHESIS OF PHOTOCHROMIC FULGIDES As a preliminary investigation of the overall synthetic ... of increasing ring size on the photochromic properties of the fulgides PART I – SYNTHESIS OF PHOTOCHROMIC FULGIDES 30 PART I CHA...
Ngày tải lên: 16/09/2015, 08:31
STUDIES ON THE SYNTHESIS OF WOLLASTONITE FROM RICE HUSK ASH AND LIMESTONE (Full Thesis) NGHIÊN CỨU VỀ TỔNG HỢP wollastonite từ vỏ trấu ASH và đá vôi
Ngày tải lên: 20/10/2014, 21:48
Tandem isomerization reaction of alkyne total synthesis of alpha yohimbine
... TANDEM ISOMERIZATION REACTION OF ALKYNES: TOTAL SYNTHESIS OF ALPHA- YOHIMBINE FENGWEI 2012 TANDEM ISOMERIZATION REACTIONS OF ALKYNES: TOTAL SYNTHESIS OF ALPHA- YOHIMBINE FENG WEI ... Enantioselective isomerization of alkynes to allenes Scheme 3.1.1 Total synthesis of alpha- yohimbine, route1 Scheme 3.1.2 Total synthesis of alpha- yohimbine,...
Ngày tải lên: 09/09/2015, 17:56
Guanidine catalyzed enantioselective mannich reaction towards the synthesis of amino acids
... GUANIDINE CATALYZED ENANTIOSELECTIVE MANNICH REACTION: TOWARDS THE SYNTHESIS OF -AMINO ACIDS PAN YUANHANG (BSc., Zhejiang University) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY ... the enantioselecitive decarboxylative Mannich and amination reactions of MAHTs catalyzed by bicyclic guanidine in the following chapters The mechanistic stud...
Ngày tải lên: 10/09/2015, 08:31
Total synthesis of the potent antibiotic platensimycin
... high-yielding synthesis of the aromatic unit (1-151) of 284 platensimycin Scheme 5.9 Preparation of the C6-methoxy analog (5-60) of (-)- 286 platensimycin Scheme 5.10 Completion of the total synthesis of ... between the benzoic acid and the four critical amino acid residues 1.4 Biosynthesis of Platensimycin By understanding the biosynthetic pathways leadi...
Ngày tải lên: 10/09/2015, 08:39
Affinity guided isolation, structure elucidation and total synthesis of laetirobin a and its analogue synthesis for therapeutic development 1 4
... δ 15 9 .42 , 15 8 .10 , 15 5.06, 15 5.03, 15 4 .19 , 15 3.80, 15 3.25, 15 1.98, 12 9.50, 12 9.03, 12 8.39, 12 8 .12 , 12 4. 42, 12 3.22, 12 2.83, 12 1. 34, 12 1.29, 12 0.66, 11 1 .49 , 11 1.23, 11 1. 01, 11 0.55, 10 6 .10 , 10 4. 92, ... 16 1.5, 16 1 .4, 16 1.3, 15 9.8, 15 9.7, 15 9.7, 15 9.6, 15 8.7, 15 8.2, 15 7.3, 15 3.7, 14 4. 7, 12 3.9, 12 3.9,...
Ngày tải lên: 10/09/2015, 15:48
Affinity guided isolation, structure elucidation and total synthesis of laetirobin a and its analogue synthesis for therapeutic development 5
... O OTs 5- 10 C43H36O9S2 760.9 OBn OTs O FT-IR Data 3 25 O OH OBn 5- 11 C29H24O5 452 .5 OH O 326 Appendix O O O OBn 5- 12 C29H24O5 452 .5 O FT-IR Data 327 O O O 5- 13 C44H32O8 688.7 O O O O O 328 Appendix ... Data 337 HO O 5- 28 C14H16O3 232.3 O 338 Appendix HO O 5- 33 C14H16O3 232.3 OH FT-IR Data 339 AcO O O 5- 32 C16H18O4 274.3 340 Appendix AcO O OAc 5- 35 C18H20O5 316.3 FT-IR Dat...
Ngày tải lên: 10/09/2015, 15:49
Affinity guided isolation, structure elucidation and total synthesis of laetirobin a and its analogue synthesis for therapeutic development 6
... Low-Resolution-Mass Data HO O 5-33 C14H16O3 232.3 OH 373 AcO O O 5-32 C16H18O4 274.3 374 Appendix Low-Resolution-Mass Data AcO O OAc 5-35 C18H20O5 3 16. 3 375 AcO O 5-38 C18H20O6 332.3 OAc O 3 76 Appendix ... Low-Resolution-Mass Data 353 OH O 5-2 C18H14O3 278.3 O 354 Appendix Low-Resolution-Mass Data 355 O 5-4 C36H24O4 520 .6 O O O O O 5 -6 C36H24O4 520 .6 O O 3 56 Appendix Low-Resolutio...
Ngày tải lên: 10/09/2015, 15:50
Affinity guided isolation, structure elucidation and total synthesis of laetirobin a and its analogue synthesis for therapeutic development 7
... 232.1099 412 Appendix O AcO O 5-32 C16H18O4 274 .1205 High-Resolution-Mass Data 413 O AcO OAc 5-35 C18H20O5 316.1311 414 Appendix O O AcO OAc 5-38 C18H20O6 332.1260 High-Resolution-Mass Data 415 O ... High-Resolution-Mass Data 391 O O O O 5-4 C36H24O4 520.1 675 392 Appendix O O O O 5-6 C36H24O4 520.1 675 High-Resolution-Mass Data 393 O I OH 5-8 C8H7IO2 261.9491 394 Appendix O I OTs 5-9 C15H13...
Ngày tải lên: 10/09/2015, 15:50