61597-55-5Relevant articles and documents
Synthesis of (+)-zerumin B using a regioselective singlet oxygen furan oxidation
Margaros, Ioannis,Vassilikogiannakis, Georgios
, p. 2021 - 2023 (2008/09/21)
(Chemical Equation Presented) A short and efficient synthesis of the antitumor diterpenoid (+)-zerumin B has been accomplished starting from (+)-sclareolide. At the heart of the synthetic strategy lies the regioselective formation of the α-substituted γ-hydroxybutenolide moiety of zerumin B. This was achieved by means of a [1,4] O→C triisopropylsilyl migration followed by singlet oxygen (1O2) oxidation of the resulting 2-triisopropylsilyl-3-(α-hydroxy)alkylfuran.
Trypanocidal labdane diterpenoids from the seeds of Aframomum aulacocarpos (Zingiberaceae)
Sob, Sylvain Valère T.,Tane, Pierre,Ngadjui, Bonaventure T.,Connolly, Joseph D.,Ma, Dawei
, p. 8993 - 8998 (2008/02/10)
Two novel labdane type diterpenoids, 8β(17)-epoxy-14,15,16-trihydroxylabd-12(E)-ene (aulacocarpin C) and 15,16-epoxy-14ξ,16ξ-dimethoxylabda-8(17),12-(E)-diene (aulacocarpin D) together with the known aulacocarpin A and B; 14,15-epoxy-8(17),12(E)-labdadien-16-al, coronarin E, and 15,16-epoxy-12β-hydroxy-labda-8(17)-13(16),14-triene were isolated from the seeds of Aframomum aulacocarpos. To the best of our knowledge, the last compound was isolated from a natural source for the first time. Acid hydrolysis of aulacocarpin D led to another new labdane type diterpenoid, 15,16-epoxy-12β-methoxylabda-8(17)-13(16),14-triene. The structures of all compounds were established on the basis of their spectroscopic data. These new compounds exhibit moderate trypanocidal activity.
Synthesis and stereochemistry of the antitumor diterpenoid (+)-zerumin B
Boukouvalas, John,Wang, Jian-Xin,Marion, Olivier,Ndzi, Bruno
, p. 6670 - 6673 (2007/10/03)
Starting from commercially available (+)-sclareolide, the first synthesis of zerumin B was achieved by a concise, highly efficient pathway featuring stereoselective addition of a new silyloxyfuryltitanium reagent to an aldehyde intermediate and silyloxyfuran oxyfunctionalization as key steps. The synthesis established the relative and absolute configuration of zerumin B along with its identity with a purportedly new diterpenoid isolated from the plant Renealmia alpinia.