| abstract |
PROBLEM TO BE SOLVED: To provide a compound effective for inducing and / or stimulating hair growth and / or preventing hair loss. SOLUTION: General formula (I): [In the above formula (I), R 1 represents an alkyl group having 5 to 20 carbon atoms, Z represents a hydrogen atom or an —OR 2 group, Wherein R 2 represents an alkyl group having 1 to 12 carbon atoms], their acyl forms or their acid addition salts. |