## Abstract The general reactivity of various sites in the vindoline series has been investigated. The facility of electrophilic substitution at C(15) and the effect of steric crowding on reactions at C(4) are discussed. At the basic nitrogen sites, oxidations with mercuric acetate and potassium pe
Total Synthesis of Indole and Dihydroindole Alkaloids. XIII. Further Chemistry of Catharanthine
✍ Scribed by James P. Kutney; Toshio Honda; Alummoottil V. Joshua; Norman G. Lewis; Brian R. Worth
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- German
- Weight
- 675 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Further investigations on the chemistry of catharanthine have provided information, valuable in the estimation of reactivity and steric requirements of the skeleton. Specific hydroxylations at C(3), C(4) and C(18) have allowed the preparation of several derivatives including (3R, 4 R)‐3‐hydroxy‐3, 4‐dihydrocatharanthine (7); (3R,4 R)‐3, 4‐dihydroxycatharanthinic acid lactone (15); 18‐decarbomethoxy‐18‐hydroxycatharanthine (40).
📜 SIMILAR VOLUMES
## Abstract The synthesis and conformational analysis of (3′__R__)‐3‐hydroxyleurosidine (**5**), (3′__S__)‐3‐hydroxyleurosidine (**10**), (3′__S__)‐3‐acetoxy‐4′‐deoxyleurosidine (**15**), (3′__R__)‐3‐acetoxy‐4′‐deoxyleurosidine (**23**), (3′__R__)‐3‐acetoxy‐4′‐deoxyvinblastine (**16**), (3′__S__)‐3