Class / Patent application number | Description | Number of patent applications / Date published |
540581000 | Two of the cyclos share at least three ring members or a ring carbon is shared by three of the cyclos (e.g., bridged, peri-fused, etc.) | 8 |
20080262223 | Isolation of Galanthamine From Biological Material - The subject matter of present invention relates to the process for isolation and purification of galanthamine and its derivatives produced by numerous plants. | 10-23-2008 |
20090326219 | PROCESS FOR MANUFACTURING EXTREMELY PURE BENZAZEPINE DERIVATIVES - A process for the production of extremely pure galanthamine or extremely pure galanthamine derivatives, a start is made from racemic bromine narwedine, which is debrominated under palladium catalysis. In this case, the working-up of the reaction mixture, which is carried out in the presence of oxygen or peroxides so that the palladium catalyst in an insoluble form is converted into an easily separable form, is essential. The further reaction is carried out by reduction of enantiomer-pure narwedine to form enantiomer-pure galanthamine, whereby it is then alkylated or dealkylated so that a corresponding substitution on the ring-nitrogen atom is achieved. By further purification, such as recrystallization, residual portions of palladium of below 5 ppm are achieved, so that direct use as a pharmaceutical raw material is made possible. | 12-31-2009 |
20100240887 | New methods of producing HHT - A safe pharmaceutical composition for treatment of cancer contains Homoharringtonine (HHT). The new methods of process for producing HHT include culture plant tissue and semisynthesis. | 09-23-2010 |
20120022250 | PROCESS FOR PREPARING CEPHALOTAXINE ESTERS - A process for preparing cephalotaxine esters corresponding to the following general formula I which comprises the cephalotaxine backbone: C(R | 01-26-2012 |
20120172590 | METHODS FOR ISOLATING ALKALOIDS FROM PLANTS - Methods are provided for isolating alkaloids from biomaterial, preferably plant biomaterial, wherein the biomaterial is extracted with a vegetable oil, in the concomitant presence of an alkaline aqueous phase. | 07-05-2012 |
20130211074 | INDOLE AND BENZOFURAN FUSED ISOQUINUCLIDENE DERIVATIVES AND PROCESSES FOR PREPARING THEM - Provided herein are indole and benzofuran fused isoquinuclidene derivatives. Also provided herein are processes, preferably enantioselective processes, for preparing such derivatives including processes for preparing (−) and (+) noribogaine or a salt thereof, in substantially enantiomerically pure forms. | 08-15-2013 |
20130310556 | PHOTOCHROMIC FUSED NAPHTHOPYRANS HAVING A BENZENE RING WHICH IS ADJACENT TO THE PYRAN OXYGEN AND IS LINKED TO THE PARA SUBSTITUENT VIA BOTH META POSITIONS - The present invention relates to photochromic fused naphthopyrans having a benzene ring which is adjacent to the pyran oxygen and is linked to the para substituent via both meta positions, and to the use thereof in plastics of all types, in particular for ophthalmic purposes. | 11-21-2013 |
540582000 | Bicyclo ring system which contains the hetero ring as one of the cyclos (e.g., 3-azabicyclo-(3.2.2)nonanes, etc.) | 1 |
540584000 | Chalcogen or nitrogen attached directly to ring nitrogen of the bicyclo ring system by nonionic bonding | 1 |
20100137582 | N-PYRIDYLPIPERIDINE COMPOUND, METHOD FOR PRODUCING THE SAME, AND PEST CONTROL AGENT - The N-pyridylpiperidine compound of the invention is represented by Formula (1) | 06-03-2010 |