2.
Compound | R1 | R2 | R3 | R4 |
---|---|---|---|---|
Mc-NCC-26 | CH(OH)-CH2OH | OH | OH | H |
Mc-NCC-42[a] | CH(OH)-CH2OH | OH | OH | CH3 |
Mc-NCC-49 | CH=CH2 | OH | OH | H |
Mc-NCC-59 | CH=CH2 | O-Glc[b] | OH | CH3 |
Mc-NCC-61 | CH=CH2 | OH | OH | CH3 |
Mc-NCC-55 | CH=CH2 | OH | daucic acid[c] | CH3 |
Mc-NCC-58 | CH=CH2 | OH | daucic acid[c] | CH3 |
[a] Identified with So-NCC-2 from senescent spinach leaves[1]; [b] Glc=β-glucopyranosyl; [c] Daucic acid bound at 5′-OH or at 4′-OH.