A e-commerce solution writed specifically by OpenERP (and writed in Python like OpenERP), without connector is Zoook e-Sale.
Zikzakmedia was developed Zoook for OpenERP 6.0, but currently is unmantained and a great part of the code was removed from the repos.
Enterprise Objects Consulting take that code and finish a ready to use version of Zoook, but only tested with v6.1, maybe the compatibility with the version 6 was lossed, or maybe not. The repositories contains all the code, with AGPL-3 license.
My karma in this site not allow me to publish links yet, sow find the code repository with Google: "zoook esale eoconsulting"