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Corydaine

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Taxonomy: Physicochemical and Pharmacological Properties of Alkaloids – Isoquinoline Alkaloids

Biological sources: Corydalis paczoskii, C. vaginans

C20H17NO6: 367.1056

Mp: 184°C (abs. EtOH) [1]; 189–189.5°C (Et2O) [2]

[α]D +145° (CHCl3) [2]

UV: 236, 290, 314 [1]

IR: 3200, 3050, 1710, 1638, 1610 [1]

MSm/z: 367(M+), 352, 338, 336, 322, 190 [1]

1H NMR: 2.28(3H, s, NCH3), 5.02(1H, s), 5.82(2, s, CH2O2), 6.16, 6.19(each 1H, d, J = 1.2, CH2O2), 6.06, 6.55(each 1H, s, p–H–Ar), 6.99, 7.45(each 1H, d, J = 8, o–H–Ar) [1]

13 C NMR: [ 3]

Table 1

C-1

105.8

C-8

75.0

C-13

202.2

2

146.9

8a

134.3

14

72.0

3

146.9

9

144.4

14a

129.8

4

108.2

10

154.5

NCH3

41.7

4a

129.3

11

110.6

2,3-OCH2O

101.1

5

29.5

12

119.6

9,10-OCH2O

103.1

6

50.2

12a

131.2

   

References

  1. 1.
    Kh.Sh. Baisheva, D.A. Fesenko, B.K. Rostotskii, M.E. Perel’son, Chem. Nat. Comp. 6, 465 (1970). D.A. Fesenko, M.E. Perel’son, Chem. Nat. Comp. 7, 157 (1971)Google Scholar
  2. 2.
    N.N. Margvelashvili, O.E. Lasskaya, A.T. Kir’yanova, O.N. Tolkachev, Chem. Nat. Comp. 12, 118 (1976)Google Scholar
  3. 3.
    D.W. Hughes, B.C. Nalliah, H.L. Holland, D.B. McLean, Can. J. Chem. 55, 3304 (1977)Google Scholar

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