A process for preparing a compound related to the espergualina

摘要

Method for preparing a compound related to the espergualina.comprende Separating Protective groups related to the espergualina of a compound of formula (ii) and obtain the desired Compound formual of (i) wherein R1 represents a hydrogen Atom or a hydroxyl Group, a Group acilox I with aliphatic C 1 to 10; R2 represents a rest or V - and amino acid; M represents an integer of 4 to 6.The operation is performed by Reduction with Hydrogen in the presence of Palladium in black or a Lower alcohol, at a temperature between atmosphere and 50jc and from atmospheric pressure up to 100 kg / cm, or by Treatment with Trifluoroacetic acid to 0jc and at Atmospheric Pressure.