✦ LIBER ✦
Bis-allylic Reactivity of the Funicolides, 5,8(17)-diunsaturated briarane diterpenes of the sea pen Funiculina quadrangularis from the tuscan archipelago, leading to 16-nortaxane derivatives
✍ Scribed by Antonio Guerriero; Michele D'Ambrosio; Francesco Pietra
- Book ID
- 102859862
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- German
- Weight
- 929 KB
- Volume
- 78
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Funicolides A–C (1–3), D (5), and E (7) and 7‐epifunicolide A (4), new 5,8(17)‐diunsaturated briarane diterpenes, as well as the known analogue brianthein W (6), were isolated from the pennatulacean coral Funiculina quadrangularis (PALLAS, 1766) collected in the Tuscan archipelago. Easy degradation under oxidative and/or basic conditions served to assign the ester groups at C(2) or C(14), while revealing bis‐allylic reactivity at C(7) with formation of 16‐nortaxane derivatives.