I've found a solution for my problem.
To hide more, print and attachment buttons, i've create a view named base.xml in my_module/static/src folder, with the next code
<?xml version="1.0" encoding="utf-8"?>
<templates>
<t t-extend="Sidebar">
<t t-jquery="div.oe_form_dropdown_section" t-operation="replace">
<t t-if="widget.session.active_id === 516">
<div class="oe_form_dropdown_section"></div>
</t>
<t t-if="widget.session.active_id !== 516">
....... original base.xml div
</t>
</t>
</templates>
where 516 is the id of view i want to hide buttons.
I think there has to be a way to avoid to set an id value, but right now this is working fine.
Kind Regards.