new oligosaccharid containing 14 aminosteroidverbindungen and new diastereoselektive aminosteroid process chemistry

摘要

The present invention relates to oligosaccharide-containing 14-aminosteroid compounds and the pharmaceutically-acceptable acid salts or esters thereof of the general formula: CHEM wherein a) R1 is (i) COOR5, where R5 is hydrogen, a 1-6 carbon lower alkyl ; a 1-6 carbon lower alkyl substituted by an amino group; an arylalkyl or heteroarylalkyl or a carbocyclic ring, or (ii) CHR6OH, where R6 is a hydrogen atom or 1-6 carbon lower alkyl group, or (iii) COR''', where R''' is hydrogen; 1-6 carbon lower alkyl; 1-6 carbon lower alkyl substituted amino; amino or dialkylamino; and b) R2 is -NR7R8, where R7 and R8, which may be the same or different, are hydrogen atoms or a 1-6 carbon lower alkyl ; and c) R3 is (i) an oligosaccharide sugar residue having the following structure: CHEM where R9 is hydrogen; methyl; hydroxy; carboxy; acetoxy; arylalkyloxy; heteroarylalkyloxy or benzoxy; R10 is hydrogen; methyl; carboxy; acetoxy; arylalkyloxy; heteroarylalkyloxy; benzoxy or hydroxy; R11 is oxygen; wherein further when R11 is a substituent on the terminal monosaccharide sugar residue; R11 is OH; methyl; acetoxy; arylalkyloxy; heteroarylalkyloxy; and R12 is a hydrogen; methyl; methylhydroxymethyl; or acetoxymethyl; or (ii) an oligosaccharide sugar residue having the following structure: CHEM where R14 and R15, which may be the same or different, are hydrogen; 1-6 carbon lower alkyl; heteroarylalkyl; arylalkyl; heteroaryl or aryl; R17 can be hydrogen; hydroxy; acetoxy or benzoxy; R18 and R19 are hydroxy; acetoxy and benzoxy; or (iii) an oligosaccharide residue having the following structure: CHEM where R14 and R15, which may be the same or different, are hydrogen; 1-6 carbon lower alkyl; heteroaryl alkyl; arylalkyl; heteroaryl or aryl; R14a is oxygen; wherein further when R14a is a substituent on the terminal monosaccharide sugar residue; R14a must be hydroxy; methyl; acetoxy; arylalkyloxy or heteroarylalkyloxy; and d) R4 is (i) OH, or (ii) H, or (iii) OR13, where R13 is a monosaccharide sugar residue; acetoxy; benzoxy; arylalkyl or heteroarylalkyl; and e) Z is (i) -CH-, where a and b are single bonds, or (ii) =C, where either a or b is a double bond. The present invention also relates to a process for introducing an amino group at the 14-position on a steroid nucleus wherein said amino group is diasteroselectively introduced onto the 14-position of the steroid nucleus via an iodoisocyanate addition comprising the steps of: a) adding the iodoisocyanate to the 14-15 position double bond on the steroid nucleus; and b) dehalogenation; and c) isocyanate conversion to the amine moiety on the 14-position of the steroid nucleus.