8
H. Zhu et al.
HN
O
HO
OH
OAc
OH
16 (cytochalasin P Natori)
HN
O
HO
OH
OH
OH
17 (cytochalasin Q Natori)
HN
O
HO
OH
OH
OH
18 (cytochalasin R Natori)
HN
O
HO
OH
OH
OH
19 (cytochalasin S)
HN
O OAc
OH
HO
O
O
20 (cytochalasin N Edwards)
HN
O OAc
OH
HO
O
OH
21 (cytochalasin O Edwards)
HN
O OAc
OH
HO
O
OH
22 (cytochalasin P Edwards)
HN
O OAc HO
O
O
23 (cytochalasin Q Edwards)
HN
O OAc HO
O
O
O
24 (cytochalasin R Edwards)
HN
O OAc HO
HO
25 (cytochalasin U Chen)
HN
O OAc
OH
26 (L-696,474)
HN
O OAc
27 (L-696,475)
HN
O OAc
HO
28 (L-697,318)
HN
O OAc
OH
29 (22-hydroxy-L-696,474)
OH
HN
O OAc
OH
30 (16ß,22-dihydroxy-L-696,474)
OH
OH
HN
O OAc HO
O
O
O
31 (19,20-epoxycytochalasin Q Edwards)
HN
O OH HO
O
O
O
32 (21-O-deacetyl-19,20epoxycytochalasin Q Edwards)
HN
O O
OH
HO
[11]-cytochalasa-6(12),13,19-triene1,21-dione)
Fig. 2 (continued)