REGISTER now for FREE 
|
FREE patent keyword monitoring and additional FREE benefits. REGISTER now for FREE
|
|
|
Organic Compounds -- Part Of The Class 532-570 Series > Azo Compounds Containing Formaldehyde Reaction Product As The Coupling Component > Carbohydrates Or Derivatives > Oxygen Containing Hetero Ring (e.g., Dioxirane, Etc.) > The Hetero Ring Is Four-membered The Hetero Ring Is Four-memberedThe Hetero Ring Is Four-membered patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.12/14/06 - 20060281934 - Processes for the production of polycyclic fused ring compounds The present invention provides processes for the production of polycyclic fused ring compounds. The polycyclic fused ring compounds are produced by protecting a polycyclic fused ring polyol with a bridging silicon-based protecting group and attaching a suitable side chain. Novel polycyclic fused ring compounds and intermediate compounds are also described. ... 12/14/06 - 20060281933 - Processes for the preparation of paclitaxel The present invention provides processes for the production of paclitaxel. Paclitaxel is produced by protecting the C(7) and the C(10) hydroxy groups of 10-DAB with a bridging silicon-based protecting group. The resulting 7,10-protected 10-DAB derivative is then derivatized and deprotected to form paclitaxel. ... 12/14/06 - 20060281932 - Processes for the preparation of docetaxel The present invention provides processes for the production of docetaxel. Docetaxel is produced by protecting the C(7) and the C(10) hydroxy groups of 10-DAB with a bridging silicon-based protecting group. The resulting 7,10-protected 10-DAB derivative is then derivatized and deprotected to form docetaxel. ... 11/30/06 - 20060270864 - Cyclic fluorine compounds, polymerizable fluoromonomers, fluoropolymers, and resist materials containing the fluoropolymers and method for pattern formation wherein R1 represents a halogen atom, and R2 and R3 each represents hydrogen or a hydrocarbon group. The above-mentioned hydrocarbon group is a straight-chain, branched or cyclic hydrocarbon group having 1 to 25 carbon atoms or an aromatic hydrocarbon group, and may contain a halogen atom, an oxygen atom, a ... 04/06/06 - 20060074254 - Process for extracting taxanes A method of extracting taxane products from biomass, which involves feeding the biomass into an pressurized liquid extraction unit and contacting the biomass with a halogenated C1 to C2 alkane solvent at a temperature of 100° C. or less and at sufficient pressure to keep the solvent in liquid form, ... 12/29/05 - 20050288521 - Semi-synthetic conversion of paclitaxel to docetaxel A process is provided for the semi-synthesis of taxane derivatives useful in the preparation of docetaxel, in particular, the semi-synthesis of protected taxane derivatives in a one pot reaction of protecting the C-2′, C-7 and C-10 and introducing a t-Boc group at the nitrogen of the amide group at the ... 12/29/05 - 20050288520 - One pot synthesis of taxane derivatives and their conversion to paclitaxel and docetaxel A process is provided for the semi-synthesis of taxane intermediates useful in the preparation of paclitaxel and docetaxel, in particular, the semi-synthesis of protected taxane intermediate in a one pot reaction of protecting the C-7, 10 and attaching a side chain at C-13 position and subsequently deprotecting the group to ... 12/08/05 - 20050272944 - Process for c7 silylation of hydroxy substituted taxanes and intermediates thereof Processes for the preparation of taxol and other taxanes through selective derivatization of the C(7) hydroxyl and C(10) hydroxyl groups of 10-DAB, particularly a novel process using a new strategy in which the C(10) hydroxyl group is protected or derivatized prior to the C(7) hydroxyl group; and the provision of ... 11/17/05 - 20050256323 - Facile method for synthesizing baccatin iii compounds wherein PG1 represents the organic residue of the protecting agent, PG2 represents the organic residue of the acylating agent, and R represents a simple or substituted aryl group or a heterocyclic group. ... 11/10/05 - 20050250954 - Semi-synthesis and isolation of taxane intermediates from a mixture of taxanes A process is provided for the semi-synthesis and isolation of taxane intermediates useful in the preparation of paclitaxel and docetaxel, in particular, the semi-synthesis and isolation of 10-deacetylbaccatin III, and protected derivatives thereof, from a mixture of taxanes. ... 10/27/05 - 20050240036 - Semi-synthesis of taxane intermediates from a mixture of taxanes A process is provided for the semi-synthesis of taxane intermediates useful in the preparation of paclitaxel and docetaxel, in particular, the semi-synthesis of 10-deacetylbaccatin III and baccatin III, and derivatives thereof, from a mixture of taxanes. ... 10/20/05 - 20050234249 - Conversion of taxane molecules The invention provides methods and compositions for reductively deoxygenating an amide group at a C-3′ position of a taxane molecule followed by subsequent intra-molecular acyl migration of an acyl group to the C-3′ position. ... 09/01/05 - 20050192446 - Polymer compounds containing oxetane and styrenic functionality in which R1 is a methyl or ethyl group; R2 and R3 are H or a methyl or ethyl group; R4 is a direct bond or a divalent hydrocarbon; X and Y are independently a direct bond or an ether, ester, amide, or carbamate group, provided both X and Y ... 09/01/05 - 20050192445 - Semi-synthesis of taxane intermediates and aziridine analogues and their conversion to paclitaxel and docetaxel A process is provided for the semi-synthesis of taxane intermediates and aziridine analogues of cephalomannne and baccatin III intermediates, and the conversion of such intermediates and analogues to paclitaxel and docetaxel. ... 08/11/05 - 20050176975 - Selective acylation of secondary hydroxyl groups The invention provides methods and compositions for selectively acylating a specific hydroxyl group in a molecule of interest containing at least two unprotected secondary hydroxyl groups. Although the methods and compositions of the invention have general applicability, they are particularly useful in the selective acylation of the taxane molecules. ... 07/14/05 - 20050154218 - Method for purification of paclitaxel from paclitaxel-containing materials This invention relates to methods for purification of paclitaxel from a paclitaxel-containing material. The method comprises the following steps: (a) extracting a paclitaxel-containing material with an organic solvent to obtain an extract, and concentrating the extract; (b) adding the concentrate with an organic solvent which is not mixed with water ... 07/14/05 - 20050154217 - Amorphous polyether glycols based on bis-substituted oxetane and tetrahydrofuran monomers This invention is directed to mono- and bis-substituted oxetane monomers having fluorinated alkoxymethylene side chains, hydroxy-terminated prepolymers derived from these mono- and bis-substituted oxetane monomers and tetrahydrofuran (THF), and polymers produced from these prepolymers, as well as the synthesis processes associated with each, and the use of the monomers, prepolymers ... ### FreshPatents.com Support |