- Method for preparation of taxol using an oxazinone
-
Process for the preparation of a taxol intermediate comprising contacting an alcohol with an oxazinone having the formula: STR1 wherein R1 is aryl, heteroaryl, alkyl, alkenyl, alkynyl or OR7 wherein R7 is alkyl, alkenyl, a
- -
-
-
- New and efficient approaches to the semisynthesis of taxol and its C-13 side chain analogs by means of β-lactam synthon method
-
Highly efficient chiral ester enolate-imine condensation giving 3-hydroxy-4-aryl-β-lactams with excellent enantiomeric purity is successfully applied to the asymmetric synthesis of the enantiomerically pure taxol C-13 side chain, N-benzoyl-(2R,3S)-3-phenyl-isoserine and its analogs. (3R,4S)-N-benzoyl-3-(1-ethoxyethoxy)-4-phenyl-2-azetidinone readily derived from the 3-hydroxy-4-phenyl-β-lactam is coupled with protected baccatin IIIs, followed by deprotection to give optically pure taxol and 10-deacetyl-7,10-bis(Troc)-taxol in good yields. Fully assigned 1H, 13C, and 2D (COSY and HETCOR) NMR spectra of taxol thus synthesized are shown and discussed.
- Ojima, Iwao,Habus, Ivan,Zhao, Mangzhu,Zucco, Martine,Park, Young Hoon,Sun, Chung Ming,Brigaud, Thierry
-
p. 6985 - 7012
(2007/10/02)
-
- Method for preparation of taxol using β-lactam
-
A β-lactam of the formula: STR1 wherein R1 is aryl, substituted aryl, alkyl, alkenyl, or alkynyl; R2 is hydrogen, alkyl, acyl, acetal, ethoxyethyl, or other hydroxyl protecting group; and R3 is aryl, substituted aryl, alky
- -
-
-
- Method for preparation of taxol using an oxazinone
-
Process for the preparation of a taxol intermediate comprising contacting an alcohol with an oxazinone having the formula: STR1 wherein R1 is aryl, substituted aryl, alkyl, alkenyl, or alkynyl; R2 is hydrogen, ethoxyethyl, 2,2,2-tric
- -
-
-
