在准备 une serie de 15 上推导 du [4.3.2] propellane par photocycloaddition d'alcenes avec les tetrahydroindanones-4 et on etudie le rearrangement cationique de ces composes
[EN] METHODS OF SYNTHESIS OF INGENOL AND INTERMEDIATES THEREOF<br/>[FR] PROCÉDÉS DE SYNTHÈSE D'INGÉNOL ET DE SES INTERMÉDIAIRES
申请人:LEO LAB LTD
公开号:WO2014191457A1
公开(公告)日:2014-12-04
The present invention relates generally to methods of synthesis of diterpene heterocylic compounds. More particularly, the present invention relates to efficient methods of synthesis of ingenol (Formula (21), CAS 30220-46-3), from a compound of formula (1). The present invention also provides for various advantageous intermediates along the synthetic route of ingenol. Efficient synthesis of ingenol is important in the design and synthesis of related analogues, such as ingenol-3-angelate.
3-Triethylsilyloxypentadienyllithium, a Versatile 1,3-Diene- or Vinyl Ketone-Building Block
作者:Wolfgang Oppolzer、Roger L. Snowden、Dana P. Simmons
DOI:10.1002/hlca.19810640705
日期:1981.11.4
(Table 1) aldehydes and ketones attack preferentially the γ-position of 4(Table 2). The desired γ-products 6 may be directly subjected to inter- and intramolecular [4 + 2]-additions as demonstrated by the reactions 5a ( 6d) 7 and 6h 19(Schemes 4 and 12). Alternatively, smooth fluoride-promoted silylether-cleavage 6 11(Scheme 8) provides a convenient approach to substituted vinyl ketones such as to
Novel Annelation Methodology for the Rapid and Efficient Construction of Bicyclo [4.n.0] Alkanols and Alkenones
作者:István E. Markó、Ali Ates
DOI:10.1055/s-1999-2768
日期:1999.7
The efficient assembly of a range of fused bicyclic alcohols and enones can be readily performed using a novel, orthoester-based, annelation methodology.
一系列稠合双环醇和烯酮的有效组装可以使用新颖的、基于原酸酯的退火方法轻松进行。
Skeletal rearrangements during the lactonisation and intramolecular acylation of some branched-chain and cyclic alkenoic acids
作者:M. F. Ansell、J. E. Emmett、B. E. Grimwood
DOI:10.1039/j39690000141
日期:——
Skeletalrearrangements have been shown to occur when 4-methylhex-4-enoic, 5-methylhex-4-enoic, 3-cyclohexylprop-2-enoic, and 4-cyclopentylbut-2-enoic acids undergo lactonisation or intramolecularacylation in the presence of hot 50% sulphuric acid or hot polyphosphoric acid.
Remarkably efficient deprotection of cyclic acetals and ketals
作者:Ali Ates、Arnaud Gautier、Bernard Leroy、Jean-Marc Plancher、Yannick Quesnel、István E Markó
DOI:10.1016/s0040-4039(99)00013-1
日期:1999.2
A simple and mild procedure for the efficientdeprotection of cyclic acetals and ketals, using cerium ammonium nitrate (CAN) is reported. The method tolerates a range of functional and protecting groups and is suitable for acid-labile substrates.