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Consolidated Statements of Operations - USD ($)
 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Operating expenses:    
Research and development $ 6,206,660 $ 7,872,397
General and administrative 10,008,913 9,226,883
Total operating expenses 16,215,573 17,099,280
Loss from operations (16,215,573) (17,099,280)
Other income (expenses):    
Change in fair value of derivative liabilities 13,108,866 (3,710,277)
Interest income, net 1,747 5,961
Other income 130,269
Total other income (expenses) 13,240,882 (3,704,316)
Net loss $ (2,974,691) $ (20,803,596)
Net loss per common share - basic and diluted $ (0.26) $ (2.09)
Weighted average number of common shares outstanding - basic and diluted 11,598,952 9,941,156