(20 to 26) (27 to 35)

Compounds

R

20

4’-HOCC₆H₄NH—

21

4’-NCC₆H₄NH—

22

4’-F₃CC₆H₄NH—

23

4’-HOOCC₆H₄NH—

24

4’-HOCC₆H₄—

25

4’-H_2­NOCC₆H₄—

26

4’-HOOCC₆H₄—

27

3’-HOCC₆H₄—

28

α-O₂NC₁₀H₆—

29

α-HOCC₁₀H₆—

30

α-HOCC₁₀H₆—

31

HOCCHCHCH₂—

32

HOCCHCH—

33

HOCNHCHCH—

34

CH₃CHCOOCHCH—

35

HOCCHCHNH—