Bizarre Patents
A vest or belt is integrally formed with tubular, pet receiving passageways which extend around the wearer's body and terminate in pocket-like chambers for feeding and retrieval.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7985857 | Usage of poly-3-hydroxybutyrates in preparation of β-lactam compounds A method for preparing compounds having the formula(I) by using P(3HB), wherein R is R1, R2, R3 are lower linear or branched C1-C4... | 07/26/2011 |
| 7358378 | 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 der... | 04/15/2008 |
| 7202370 | Semi-synthesis of taxane intermediates from 9-dihydro-13-acetylbaccatin III A method is provided for the semi-synthesis of taxane intermediates useful in the preparation of paclitaxel and docetaxel from 9-dihydro-13-acetylbaccatin III. The preparation of a suitably protected baccatin III backbone from 9-dihydro-13-acetylbaccatin III, and th... | 04/10/2007 |
| 7115784 | Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds The present invention relates to copper-catalyzed carbon-heteroatom and carbon-carbon bond-forming methods. In certain embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-nitrogen bond between the nitrogen atom of an amide or a... | 10/03/2006 |
| 6730782 | Carbamoyl substituted β-lactams Taxane derivatives having an amino substituted C13 side chain. ... | 05/04/2004 |
| 6569847 | Substituted azetidin-2-ones as cysteine protease inhibitors This invention relates to substituted azetidin-2-ones and to pharmaceutical compositions containing such compounds. Their use in medicine as inhibitors of cysteine proteases, particularly the cathepsins is also described. The invention includes a compound... | 05/27/2003 |
| 6562962 | Preparation of substituted isoserine esters using metal alkoxides and ଲ-lactams A process for preparing N-acyl, N-sulfonyl and N-phosphoryl substituted isoserine esters in which a metal alkoxide is reacted with a ଲ-lactam.... | 05/13/2003 |
| 6225463 | Synthesis of new ଲ-lactams The object of the present invention is the development of new chiral auxiliaries for improved ଲ-lactam formation that control both the diastereoselectivity of ଲ-lactam formation and which can be removed without destruction of the sensitive aze... | 05/01/2001 |
| 6187916 | Process for the preparation of taxane derivatives and ଲ-lactam intermediates therefor A process for the preparation of a taxane derivative of the formula ##STR1## in which R2 represents an RO--, RS-- or RR'N-- in which R represents an unsubstituted or substituted straight chain or branched alkyl, alkenyl or alkynyl, or cycloalky... | 02/13/2001 |
| 6153747 | Process for the preparation of 2-halomethyl-penems and their use for the preparation of antibacterial penems Process for the preparation of 2-halomethyl-penems (I) comprising (a) reacting an acetoxy-(protected hydroxyethyl)-2-azetidinone (III) with a 2-halothioacetic acid to form a 3-haloacetylthioazetidinone (V), (b) reacting (V) with oxalyl chloride to give an... | 11/28/2000 |
| 6013791 | Process for the preparation of 4-(formylthio)-azetidin-2-one derivatives and penem derivatives A process for the preparation of a compound of formula (IVA) which process comprises subjecting a compound of formula (V), where R is an ester-forming group or carboxy-protecting group, and X and Y are hydrogen or halogen provided that at least one of X o... | 01/11/2000 |
| 6008347 | N-substituted 2-azetidinones The present invention provides novel cis-N-iminomethyl-3,4-disubstituted-2-azetidinones, and their use in the preparation of N-acyl-2-azetidinones, intermediates in the semi-synthesis of taxol and taxol derivatives.... | 12/28/1999 |
| 5916887 | 4-substituted-3-(2-amino-2-cycloalkyl methyl)-acetamido azetidin-2-one derivatives as cysteine proteinase regulators In accordance with the present invention, there are provided 4-substituted-3-(2-amino-2-cycloalkyl methyl)-acetamido azetidin-2-one derivatives of the formula: ##STR1## wherein n is 1, 2 or 3; in which R1, R2 and R3 a... | 06/29/1999 |
| 5866691 | Lactam nucleic acids Novel ଲ-lactam monomers bearing various functional groups are prepared. The novel ଲ-lactam monomers can be joined into oligomeric compounds such as via preferred phosphate linkages including phosphodiester and phosphorothioate linkages. Useful... | 02/02/1999 |
| 5831091 | Process for preparing acetoxyazetidinone derivative and intermediate thereof An N-2-(1-hydroxyethyl)-3-oxopropyl!amine compound of the formula III!: ##STR1## wherein Ring B represents a benzene ring which may be substituted; W represents oxygen atom or sulfur atom; Y represents oxygen atom, sulfur atom or N R0,... | 11/03/1998 |
| 5808055 | Copper catalyzed process for producing 4-substituted azetidinone derivatives A process for producing a 4-substituted azetidinone derivative represented by the following general formula III!: ##STR1## (wherein OR is a protected hydroxy group, Y is an alkyl group, an alkoxy group, a silyloxy group, a carbamoyloxy group, an am... | 09/15/1998 |
| 5760219 | Pyridyl substituted B-lactam compounds Pyridyl substituted ଲ-lactam compounds used in preparing taxane derivatives having a 3' pyridyl substituted C13 side chain.... | 06/02/1998 |
| 5728827 | Process for the synthesis of azetidinones This invention provides a process for preparing azetidinones useful as intermediates in the synthesis of penems and as hypocholesterolemic agents, particularly for azetidinones substituted in the C-3 and C-4 positions and optionally substituted at the rin... | 03/17/1998 |
| 5639878 | Acyloxylation process for preparing 4-acyloxy-2-azetidinone derivatives The present invention relates to a novel and improved process for preparing 4-acyloxy-2-azetidinone derivatives having the following formula (I) which are useful as an intermediate for synthesis of penem or carbapenem compounds: ##STR1## in whic... | 06/17/1997 |
| 5629420 | Substituted acetoxyazetidinone derivatives and process for preparing 4-acyloxyazetidinone derivatives A process for preparing a 4-acyloxyazetidinone or a derivative thereof represented by formula (IV): ##STR1## wherein R1 represents a hydrogen atom, a lower alkyl group, a hydroxyethyl group, or a protected hydroxyethyl group; R3... | 05/13/1997 |
| 5606052 | Substituted acetoxyazetidinone derivatives and process for preparing 4-acyloxyazetidinone derivatives A process for preparing a 4-acyloxyazetidinone or a derivative thereof represented by formula (IV): ##STR1## wherein R1 represents a hydrogen atom, a lower alkyl group, a hydroxyethyl group, or a protected hydroxyethyl group; R3... | 02/25/1997 |
| 5574156 | ଲ-lactams used in preparing taxol A ଲ-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, substit... | 11/12/1996 |
| 5567614 | Enzymatic processes for resolution of enantiomeric mixtures of compounds useful as intermediates in the preparation of taxanes Methods for the enzymatic resolution of mixtures of enantiomers, such as ଲ-lactam compounds, which may be employed as intermediates in the preparation of taxanes such as taxol, the latter useful in the pharmaceutical field.... | 10/22/1996 |
| 5563264 | Preparation of ଲlactam compounds A process for preparing a ଲ-lactam compound of the formula (I): ##STR1## which comprises cyclization, in the presence of a catalyst, of an azetidinone derivative of the formula: ##STR2## is provided in which R1 is hydrogen, alky... | 10/08/1996 |
| 5554746 | Lactam nucleic acids Novel ଲ-lactam monomers bearing various functional groups are prepared. The novel ଲ-lactam monomers can be joined into oligomeric compounds such as via preferred phosphate linkages including phosphodiester and phosphorothioate linkages. Useful... | 09/10/1996 |
| 5440030 | Ru catalyzed acyloxylation process for preparing 4-acyloxyazetidinone derivatives A process for preparing a 4-acyloxyazetidinone or a derivative thereof represented by formula (IV): ##STR1## wherein R1 represents a hydrogen atom, a lower alkyl group, a hydroxyethyl group, or a protected hydroxyethyl group; R3... | 08/08/1995 |
| 5412092 | N-substituted 2-azetidinones Novel cis compound having the formula: ##STR1## wherein R1 is alkyl, haloalkyl, cycloalkyl, aryl or a carbohydrate derivative; X is O, N, S, C(O)O or a direct bond; and R2 is aryl, substituted aryl or heteroaryl are useful in th... | 05/02/1995 |
| 5386029 | Process for the manufacture of 4-acyloxy-3-hydroxyethyl-azetidinones The invention relates to a novel process for the manufacture of (3R,1'R)-4-acyloxy-3-(1'-hydroxyethyl)-2-azetidinones of formula ##STR1## in which R1 represents lower alkyl or aryl, by enantioselective reduction of the carbonyl group in a ... | 01/31/1995 |
| 5334328 | Chiral azetidinone derivatives, and their use as dopes in liquid-crystal mixtures Azetidinones of the formula I ##STR1## in which, for example, R1 is an alkyl or alkenyl radical, R2 and R3 are hydrogen or an alkyl or alkenyl radical, Z is hydrogen or (pseudo)halogen, A1, A2 an... | 08/02/1994 |
| 5317100 | Process for the preparation of optically active acyloxyazetidinones Compounds of the formula ##STR1## in which R1 is hydrogen or lower alkyl, R2 is hydrogen or a hydroxyl protective group R2 ' and R3 is substituted or unsubstituted phenyl or lower alkyl can be prepared in a... | 05/31/1994 |
| 5312914 | Process for the manufacture of 4-acetoxy-3-hydroxyethyl-azetidinone The invention relates to a novel process for the manufacture of 4-acetoxy-3-hydroxyethyl-azetidinone of the formula ##STR1## especially 4(R)-acetoxy-3(R)-(1'(R)-hydroxyethyl)-2-azetidinone, from enantiomerically pure compounds of the formula ##S... | 05/17/1994 |
| 5300638 | Asymmetric synthesis of taxol side chain The present invention relates to a process for the preparation of (3R, 4S)-3-hydroxy-4-phenyl-2-azetidinone derivatives which are useful intermediates in the synthesis of taxol from baccatin III, said process comprises reacting an acyloxyacetyl halide wit... | 04/05/1994 |
| 5288862 | Substituted acetoxyazetidinone derivatives and process for preparing 4-acyloxyazetidinone derivatives A process for preparing a 4-acyloxyazetidinone or a derivative thereof represented by formula (IV): ##STR1## wherein R1 represents a hydrogen atom, a lower alkyl group, a hydroxyethyl group, or a protected hydroxyethyl group; R3... | 02/22/1994 |
| 5286857 | Intermediate for the preparation of penems An efficient, multistep process for the synthesis of certain 6-(1-hydroxyethyl) 2-substituted penem antibiotics from 2-[4R-(triphenylmethylthio)-3S-(1R-(dimethyl-t-butylsilyloxy)ethyl)-2-azet idon-1-yl]acetic acid esters.... | 02/15/1994 |
| 5250677 | Azetidin-2-one derivatives as serine protease inhibitors The present invention relates to new 3-guanidinoalkyl-2-azetidinones of the formula ##STR1## wherein: U and W can be the same or different and are selected from the group consisting of hydrogen and an amino protecting group; n is 1 to 3; X is a membe... | 10/05/1993 |
| 5229381 | Substituted azetidinones as anti-inflammatory and antidegenerative agents New substituted azetidinones of the general formula (A') which have been found to be potent elastase inhibitors and thereby useful anti-inflammatory and antidegenerative agents are described. ##STR1##... | 07/20/1993 |
| 5204460 | Ruthenium catalyzed process for preparing 4-acetoxyazetidinones A simplified process for preparing 4-acetoxyazetidinones of formula (I): ##STR1## wherein Z is a hydrogen atom, a lower alkyl group or a hydroxyethyl group which may or may not be protected is disclosed. According to the invention, azetidinones of fo... | 04/20/1993 |
| 5202433 | Polysaccharide derivatives as separating agents A polysaccharide derivative prepared by replacing a part or the whole of hydrogen atoms of hydroxyl and/or amino groups of a polysaccharide with one or more atomic groups represented by the following formula (1), (2) or (3) is new and useful for the separ... | 04/13/1993 |
| 5191077 | Diastereomeric 5R,6S-6-(1R-hydroxyethyl)-2-(cis-1-oxo-3-thiolanylthio)-2-penem-3-carbox ylic acids Diastereomeric 5R,6S-6-(1R-hydroxyethyl)-2-(1S-oxo-3R-thiolanylthio)-2-penem-3-carboxylic acid and 5R,6S-6-(1R-hydroxyethyl)-2-(1R-oxo-3S-thiolanylthio)-2-penem-3-carboxylic acid, and pharmaceutically-acceptable salts and in vivo hydrolyzable es... | 03/02/1993 |
| 5191076 | Acetyloxylation process for producing 4-acetoxyazetidinones with osmium catalyst A process for producing a 4-acetoxyazetidinone represented by formula (I): ##STR1## wherein Z represents a hydrogen atom, a lower alkyl group, or a protected or unprotected hydroxyethyl group; and W represents a hydrogen atom, a lower alkyl group, or... | 03/02/1993 |
