Leveraging partnership interest for more properties

[Robert Motch]

I have a partnership interest in a commercial building that is projected to generate a cash on cash return of more than 12% and ROI of 15-16%.

I would like to pull the cash out of this partnership interest and use the cash for the down payment on my next deal. 

My initial thoughts were:

1) find a private investor to hold a note for the value of the partnership interest at an agreed upon interest rate. My partnership interest would be the collateral for the note.

2) find an equity investor to invest the value of the partnership interest and then agree to a profit sharing split with this investor.

What structures have other investors created to accomplish a similar goal?