EC Number |
Natural Substrates |
---|
3.4.22.6 | 4-cyanobenzaldehyde + cyclohexanone |
catalytic activity and stereoselectivity of chymopapainare influenced by different media. Best catalytic activity and moderate stereoselectivity in DMSO (yield: 50%, anti/syn ratio 55:45, ee(anti): 40%), best enantioselectivity in CH2Cl2 (yield: 18%, anti/syn ratio: 61:39, ee(anti): 79%) |
3.4.22.6 | more |
mass spectroscopy studies show unequivocally the specificity of chymopapain toward Ala, Pro, Val and Lys for positions P4 to P1 while not presenting high specificity for residues in position P1 |
3.4.22.6 | 4-cyanobenzaldehyde + cyclohexanone |
solvent: water/MeCN. The water content greatly affects the activity and selectivity of chymopapain for the aldol reaction. The best enantioselectivity and diastereoselectivity at the water content of 0.12 (water/MeCN, v/v), which give the product in a yield of 28% with 73:27 (anti/syn ratio) and 77% ee (for anti isomer). Best enzyme activity at the water content of 0.15, which give a yield of 32% with lower selectivity |
3.4.22.6 | 4-nitrocyclohexan-1-one + acetaldehyde |
yield: 12%, ee (anti): 14% |
3.4.22.6 | furan-2-carbaldehyde + cyclohexanone |
yield: 16%, 63:37 anti/syn, ee (anti): 61% |
3.4.22.6 | 4-nitrocyclohexan-1-one + cycloheptanone |
yield: 19%, 47:53 anti/syn, ee (anti): 26% |
3.4.22.6 | 4-methylcyclohexan-1-one + cyclohexanone |
yield: 23%, 63:37 anti/syn, ee (anti): 96% |
3.4.22.6 | 2-nitrocyclohexan-1-one + cyclohexanone |
yield: 24%, 87:13 anti/syn, ee (anti): 82% |
3.4.22.6 | 4-bromocyclohexan-1-one + cyclohexanone |
yield: 29%, 81:19 anti/syn, ee (anti): 84% |
3.4.22.6 | 2-chlorocyclohexan-1-one + cyclohexanone |
yield: 30%, 86:14 anti/syn, ee (anti): 79% |