Sunesis Pharmaceuticals Inc., of South San Francisco, said it entered a $15 million loan agreement with Bridge Bank, a division of Western Alliance Bank and Solar Capital Ltd. It will be used for repayment of existing indebtedness and for general corporate purposes. Sunesis said it believes proceeds from the agreement, plus cash on hand, extends its runway through the second quarter of 2017, past an anticipated regulatory decision in Europe for cancer drug vosaroxin.