ZLL.8 - 20 - ACS Publications - American Chemical Society

12,370 (1973); (b) S. B. Carter, Endeavour, 113,77 (1972). (2) The transition state involving the desired diene should be favored because in that case...
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7777

Communications to the Editor by chromatography on silica with 9:l CHC13-CH30H) to cytochalasin B has been described previously.I3

Acknowledgment. W e thank the National Institutes of Health and the National Science Foundation for their support of this work.

Table I

basea

temp, 'C

time, minb

25 25 25 25 25 0 -20

30 35 300 45 5