Sounds like this is what you are asking:
1. Company receives a $50,000 loan from shareholders
DR Cash $50,000
CR Loan Payable to Shareholders
2. Periodically, loan principal and interest are "paid" to shareholders by increasing their share capital. No cash is paid.For the example at this month, $1,000 in principal is paid and $200 interest expense for a $1,200 payment.
DR Loan Payable to Shareholders $1,000
DR Loan Interest Expense $200
CR Shareholder capital <$1,200>