cas 155396-69-3, (2R,4S,5R)-3-(tert-butoxycarbonyl)-2-(4-Methoxyphenyl)-4-phenyloxazolidine-5-carboxylic acid | Articles data ｜lookchem

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155396-69-3

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Process for preparing taxane derivatives
Method of preparing taxane derivatives of general formula (I) by esterification of protected baccatine III or 10-deacetyl-baccatine III by means of an acid of general formula (VII), deprotection of the side chain and elimination of the hydroxy function protection groupings. In general formulae (I) and (VII): Ar stands for aryl, R is hydrogen or acetyl, R1 is benzoyl or R2 --O--CO-- in which R2 is alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, bicycloalkyl, phenyl or heterocyclyl, and R3 is hydrogen, alkoxy, optionally substituted aryl. STR1
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(2008/06/13)

2-Monosubstituted-1,3-Oxazolidines as Improved Protective Groups of N-Boc-Phenylisoserine in Docetaxel Preparation
A new route for semisynthetic docetaxel, 1, is desribed using 2-monosubstituted-4-phenyl-1,3-oxazolidine-5-carboxylic acids in esterification of 7,10-O-diTroc-10-desacetylbaccatin III (4).Subsequent deprotection of esters 10(+10') afforded title compound 1 without removal of the Boc group.
Didier, Eric,Foque, Elie,Taillepied, Isabelle,Commercon, Alain
p. 2349 - 2352
(2007/10/02)

Highly stereocontrolled and efficient preparation of the protected, esterification-ready docetaxel (Taxotere) side chain
A high-yield synthesis of the p-methoxybenzylidene-protected docetaxel (Taxotere) side chain, a useful derivative for efficient, epimerization-free esterification of the 7,10-bis[(trichloroethoxy)carbonyl] derivative of 10-desacetylbaccatin III for the preparation of docetaxel, has been effected; the C-4 and C-5 stereocenters of the 1,3-oxazolidine are generated with complete (≥99%) stereocontrol whereas that at C-2 is produced with 96% selectivity.
Kanazawa,Denis,Greene
p. 1238 - 1240
(2007/10/02)

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Chemical Properties

Boiling Point: 573.799°C at 760 mmHg
Flash Point:300.823°C
Density: 1.238g/cm³
Storage Temp.:2-8°C
Vapor Pressure: 0mmHg at 25°C
PKA: 2.99±0.60(Predicted)
PSA: 85.30000
LogP: 4.09350

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