| 摘要 |
<p>Preparation of 10-hydroxycamptothecin and 7-alkyl-10-hydroxycamptothecin, comprises providing a continuous liquid stream with a thickness (d) of a solution of camptothecin-N-oxide or 7-alkyl-camptothecin-N-oxide and passing the stream to at least a light source, which emits light parallel to the thickness (d), where (d) is 10-1000 mu m. An independent claim is included for a device for carrying out the process, comprising two-transparent, flat quartz glass plates, which are arranged parallel to each other at a distance of 10-1000 mu m, two walls, which are in the space between the plates bordering two sides, which are opposite to each other, two openings, which lie opposite to each other and which are not bordered by the walls, two light sources, which are arranged perpendicularly to the plates in such a manner that their radiations penetrate through both the plates into the space, where the plates are connected to each other in a material-closed manner.</p> |
