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http://hdl.handle.net/11154/61
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| Title: | Novel steroidal penta- and hexacyclic compounds derived from 12-oxospirostan sapogenins |
| Authors: | Perez-Diaz, JOH
Vega-Baez, JL
Sandoval-Ramirez, J
Meza-Reyes, S
Montiel-Smith, S
Farfan, N
Santillan, R |
| Issue Date: | 2010 |
| Abstract: | The E ring regioselective acid-catalyzed opening of spirostanic sapogenins possessing a carbonyl group at C-12, such as botogenin and hecogenin, provided the new 12,23-cyclo-22,26-epoxycholesta-11,22-diene skeleton, in addition to new compounds of the already known 12,23-cyclocholest-12(23)-en-22-one frameworks. This transformation proceeds in a single step, under slightly acidic conditions. Both, penta- and hexacyclic steroids were obtained with retention of configuration of all asymmetric centers. (C) 2010 Elsevier Inc. All rights reserved. |
| URI: | http://hdlhandlenet/123456789/175 |
| ISSN: | 0039-128X |
| Appears in Collections: | Ciencias
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