87980-68-5Relevant articles and documents
Identification, structural modification, and dichotomous effects on human immunodeficiency virus type 1 (HIV-1) replication of ingenane esters from Euphorbia kansui
Liu, Qingbo,Li, Wei,Huang, Li,Asada, Yoshihisa,Morris-Natschke, Susan L.,Chen, Chin-Ho,Lee, Kuo-Hsiung,Koike, Kazuo
supporting information, p. 618 - 627 (2018/07/29)
Euphorbia kansui showed potent anti-HIV-1 activity during screening of a library composed of plant extracts from Euphorbiaceae and Thymelaeaceae families. Bioassay-guided isolation led to identification of ingenane esters as the active compounds. Further chemical modification resulted in 3-(2-naphthoyl)ingenol (23), which exhibited the most potent anti-HIV-1 activity. Compound 23 also acted as an HIV-1-latency-reversing agent on activation of HIV-1 replication in a latently infected U1 cell model and a T cell latent HIV-1 model JLat-A2.
Total synthesis of natural derivatives and artificial analogs of 13-oxyingenol and their biological evaluation
Ohyoshi, Takayuki,Tamura, Yuki,Hayakawa, Ichiro,Hirai, Go,Miyazawa, Yamato,Funakubo, Shota,Sodeoka, Mikiko,Kigoshi, Hideo
supporting information, p. 11426 - 11437 (2016/12/18)
We have established an efficient synthetic methodology for the 13-oxyingenol natural derivative (13-oxyingenol-13-dodecanoate-20-hexanoate), featuring a ring-closing olefin metathesis reaction for the “direct” construction of a highly strained inside-outside framework and a Mislow-Evans-type [2,3]-sigmatropic rearrangement for the stereoselective introduction of the hydroxy group at C5. We also synthesized artificial analogs of 13-oxyingenol and ingenol by using our synthetic strategy. In vitro activation assays of protein kinase C (PKC) α and δ revealed that the dodecanoyl group at O13 on 13-oxyingenol analogs had a significant role in PKCδ activation. The PKCα- or PKCδ-activating 13-oxyingenol and ingenol analogs induced both distinct morphological changes and increases of CD11b expression in HL-60 cells, which would be typical signs of HL-60 cell differentiation to macrophage-like cells, as expected by previous reports. Intriguingly, however, similar differentiation phenotypes were observed with the use of 13-oxyingenol natural derivatives and 13-oxyingenol-13-dodecanoate showing a remarkably less potent PKCα or PKCδ activation ability, which the PKC inhibitor G?6983 diminished. This indicated the involvement of other PKC isozymes or related kinase activities. 13-Oxyingenol analogs, which induced HL-60 cell differentiation, also induced HL-60 cell death, similar to the action of a phorbol ester, a strong PKC activator.
Semisynthesis of ingenol 3-angelate (PEP005): Efficient stereoconservative angeloylation of alcohols
Liang, Xifu,Grue-Sorensen, Gunnar,Petersen, Anders Klarskov,H?gberg, Thomas
, p. 2647 - 2652 (2013/01/15)
A high-yielding method was developed for the preparation of ingenol 3-angelate (PEP005, ingenol mebutate) via the corresponding 5,20-acetonide without concomitant isomerization of the angelate (Z-form) to the corresponding tiglate (E-form). The general sc
A METHOD OF PRODUCING INGENOL-3-ANGELATE
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, (2012/02/05)
The present invention relates to methods of producing ingenol-3-angelate (I) from ingenol (II). Formula (I) and (II). Furthermore, the invention relates to intermediates useful for the synthesis of ingenol-3-angelate (I) from ingenol (II) and to methods of producing said intermediates.
INGENOL-3-ACYLATES I
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Page/Page column 37-38, (2012/07/13)
The invention relates to compounds of general formula (I) wherein R is (C1-C7)alkyl, (C2-C7)alkenyl or (C2-C7)alkynyl; wherein R is substituted with R1; and pharmaceutically acceptable salt