The present invention relates to a compound according to formula I
wherein R1 represents hydrogen, R2 represents hydroxyl and R3 represents hydroxyl;
or R1 represents methyl, R2 represents hydroxyl and R3 represents hydrogen;
or R1 represents methyl, R2 represents hydrogen and R3 represents hydroxyl;
or R1 represents methyl, R2 represents hydrogen and R3 represents hydrogen;
or pharmaceutically acceptable hydrates or solvates thereof. The invention further relates to said compounds for use as a medicament, to pharmaceutical compositions comprising said compounds, to methods of treating diseases with said compounds and to intermediates for the preparation of said compounds.
[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.
CH Oxidation of Ingenanes Enables Potent and Selective Protein Kinase C Isoform Activation
作者:Yehua Jin、Chien-Hung Yeh、Christian A. Kuttruff、Lars Jørgensen、Georg Dünstl、Jakob Felding、Swaminathan R. Natarajan、Phil S. Baran
DOI:10.1002/anie.201507977
日期:2015.11.16
Ingenol derivatives with varying degrees of oxidation were prepared by two‐phase terpene synthesis. This strategy has allowed access to analogues that cannot be prepared by semisynthesis from natural ingenol. Complex ingenanes resulting from divergent CH oxidation of a common intermediate were found to interact with protein kinase C in a manner that correlates well with the oxidation state of the
通过两相萜烯合成制备了不同氧化程度的巨大戟二萜醇衍生物。该策略允许获得无法通过天然巨大戟二萜醇半合成制备的类似物。人们发现,由常见中间体的不同 C → H 氧化产生的复杂的内烯烷与蛋白激酶 C 相互作用,其方式与内烯烷核心的氧化态密切相关。尽管先前关于六烯烷的研究表明激活 PKC δ 的潜力与中性粒细胞氧化爆发的诱导之间存在很强的相关性,但当前的研究表明激活 PKCβII 的潜力至关重要,而与 PKC δ 的相互作用是可有可无的。因此,对 ingenane 核心的关键修饰允许 PKC 同种型选择性,其中 PKCδ 驱动的角质形成细胞的激活大大减少甚至不存在,而 PKCβII 驱动的中性粒细胞的激活被保留。
Nineteen-step total synthesis of (+)-phorbol
作者:Shuhei Kawamura、Hang Chu、Jakob Felding、Phil S. Baran
DOI:10.1038/nature17153
日期:2016.4
Phorbol, the flagship member of the tigliane diterpene family, has been known for over 80 years and has attracted attention from many chemists and biologists owing to its intriguing chemical structure and the medicinal potential of phorbol esters. Access to useful quantities of phorbol and related analogues has relied on isolation from natural sources and semisynthesis. Despite efforts spanning 40
作者:Steven J. McKerrall、Lars Jørgensen、Christian A. Kuttruff、Felix Ungeheuer、Phil S. Baran
DOI:10.1021/ja501881p
日期:2014.4.16
oxidase) as loosely modeled after terpenebiosynthesis. Initial modelstudies establishing the viability of a Pauson-Khand approach to building up the carbon framework are recounted. Extensive studies that led to the development of a 7-step cyclase phase to transform (+)-3-carene into a suitable tigliane-type core are also presented. A variety of competitive pinacol rearrangements and cyclization reactions