Picando en el titular obtendremos un poco de resumen sobre la relacion entre Yondelis y el Phthalascidin ( PT-650 ) ...
Y aqui tenemos la Patente conseguida hace 3 meses :
PROCESS FOR PRODUCING A PENTACYCLIC COMPOUND AS AN INTERMEDIATE FOR THE PRODUCTION OF ECTEINASCIDIN AND PHTHALASCIDIN COMPOUNDS  . ... 
Publication number: IL151168 (A)  
Publication date: 2008-11-03  
Inventor(s):  
Applicant(s): HARVARD COLLEGE [US]  
Classification:   
- international: C07D491/18; C07B61/00; C07D491/22; C07D498/18; C07F7/18; C07B61/00; C07D491/00; C07D498/00; C07F7/00  
- European: C07D491/22; C07D498/18; C07F7/18C4D4D  
Application number: IL20020151168 20020809  
Priority number(s): US20000181795P 20000211; WO2001US04376 20010209