Well, I accomplish that with the support of my parter.
The configuration was:

server {
listen 80;
server_name apps.elcomercio.com;
keepalive_timeout 10 10;
location ~* ^/suscriptores/?$ {
rewrite ^(.*)$ http://apps.elcomercio.com/suscriptores/macro/suscriptores_diario.asp permanent;
#include /etc/nginx/proxy.conf;
}
location / {
proxy_pass http://suscriptor;
include /etc/nginx/proxy.conf;
proxy_cache two;
}

}