Dolastatins 24: synthesis of (–)-dolastatin 10. X-Ray molecular structure of N,N-dimethylvalyl-valyl-dolaisoleuine tert-butyl ester
摘要:
Total synthesis of the extraordinary antineoplastic constituent, dolastatin 10, from the Indian Ocean mollusc Dolabella auricularia has been summarized. The final synthetic step involved diethyl cyanophosphonate-mediated coupling of Dov-Val-Dil with Dap-Doe. Improved syntheses of these important precursors has led to a very practical synthesis of natural dolastatin 10. Important details of the HPLC and high-field (500 MHz) NMR characterization techniques employed to confirm the purity of dolastatin 10 have been recorded.
Pettit, George R.; Herald, Delbert L.; Singh, Sheo Bux, Journal of the American Chemical Society, 1991, vol. 113, # 17, p. 6692 - 6693
作者:Pettit, George R.、Herald, Delbert L.、Singh, Sheo Bux、Thornton, Timothy J.、Mullaney, Jeffrey T.
DOI:——
日期:——
PETTIT, G. R.;SINGH, S. B.;HOGAN, F.;LLOYD-WILLIAMS, P.;HERALD, D. L.;BUR+, CHEMTRACTS - ORG. CHEM., 3,(1990) N, C. 54-57
作者:PETTIT, G. R.、SINGH, S. B.、HOGAN, F.、LLOYD-WILLIAMS, P.、HERALD, D. L.、BUR+
DOI:——
日期:——
PETTIT, GEORGE R.;HERALD, DELBERT L.;SINGH, SHEO BUX;THORNTON, TIMOTHY J.+, J. AMER. CHEM. SOC., 113,(1991) N7, C. 6692-6693
作者:PETTIT, GEORGE R.、HERALD, DELBERT L.、SINGH, SHEO BUX、THORNTON, TIMOTHY J.+
DOI:——
日期:——
Dolastatins 24: synthesis of (–)-dolastatin 10. X-Ray molecular structure of N,N-dimethylvalyl-valyl-dolaisoleuine tert-butyl ester
作者:George R. Pettit、Jayaram K. Srirangam、Sheo Bux Singh、Michael D. Williams、Delbert L. Herald、József Barkóczy、Darko Kantoci、Fiona Hogan
DOI:10.1039/p19960000859
日期:——
Total synthesis of the extraordinary antineoplastic constituent, dolastatin 10, from the Indian Ocean mollusc Dolabella auricularia has been summarized. The final synthetic step involved diethyl cyanophosphonate-mediated coupling of Dov-Val-Dil with Dap-Doe. Improved syntheses of these important precursors has led to a very practical synthesis of natural dolastatin 10. Important details of the HPLC and high-field (500 MHz) NMR characterization techniques employed to confirm the purity of dolastatin 10 have been recorded.
über Aminosäuren und Peptide, 50. Über aktivierteN, N-Dimethylaminosäuren. – Synthese von Enkephalinen mitN,N-Dimethyltyrosin
作者:Ulrich Schmidt、Karin Schefenacker
DOI:10.1002/jlac.198519850615
日期:1985.6.12
Zur Aktivierung von N, N-Dimethylaminosäuren beim Aufbau von N,N-Dimethylpeptiden sind die Ester des 3-Cyan-4,6-dimethyl-2-pyridinthiols allen anderen untersuchten Aminosäurederivaten überlegen. Mit ihrer Hilfe ließen sich N,N-Dimethyl-Enkephaline ohne Epimerisierung aufbauen.