Originally Posted by
hybridbkrdr
Some Sugino chainrings don't have pins and ramps. I don't know if you need a chainguide or not though.
Flat, unenhanced chainrings are available from Surly and many by Suguino, SR, etc. are still lying around NOS in bike shops. However, most of these are going to have 5-bolt, 130 or 110 mm bolt circles. Surly does sell 94 and 104 mm BCD chainrings but only up to 36 teeth.
I'm not sure what vintage the OP's Deore crank is and what BCD it requires.