Studies on the substituted 3-aminopropan-1-ol motif of lycoctonine class norditerpenoid alkaloids: A novel route to 3-hydroxymethylcyclohex-2-enone
摘要:
Pursuing our interest in methyllycaconitine (MLA), we have designed a synthetic route to substituted ring-A of lycoctonine class norditerpenoid alkaloids. A novel synthesis of 3-hydroxymethylcyclohex-2-enone has been achieved starting from cyclohex-2-enone. Key reactions are: 1,2-addition of 1,3-dithiane followed by allylic rearrangement, 1,4-hydrocyanation, Wittig reaction and conversion into the substituted N-ethyl-3-aminopropan-1-ol motif of these neopentyl-like alcohols. (C) 1998 Elsevier Science Ltd. All rights reserved.
[EN] NOVEL CYP17 INHIBITORS/ANTIANDROGENS<br/>[FR] NOUVEAUX INHIBITEURS DE CYP17/ANTIANDROGÈNES
申请人:ORION CORP
公开号:WO2014202827A1
公开(公告)日:2014-12-24
Compounds of formula (I), wherein R1 to R8 A, B, Z1 and Z2 are as defined in the claims and pharmaceutically acceptable salts and esters thereof are disclosed. The compounds of formula (I) possess utility as androgen receptor antagonists (inhibitors) and/or cytochrome P450 monooxygenase 17a-hydroxylase/17,20-lyase (CYP17) inhibitors. The compounds are useful as medicaments in the treatment of cancer, particularly prostate cancer, and other androgen dependent conditions and diseases where androgen antagonism is desired.
α-phenylthio β,γ-unsaturated carbonyl compound through an α,β-epoxy sulfoxide. Oxidation of the sulfide with 2.1 equivalents of m-chloroperbenzoic acid gave α,β-unsaturated γ-phenylsulfinyloxy carbonyl compound via sulfoxide-sulfenate rearrangement. The sulfinate was easily hydrolyzed with aqueous potassium hydroxide to afford α,β-unsaturatedγ-hydroxy carbonyl compound in good yield. When optically active
Compounds of formula (I)
wherein R
1
to R
8
, A, B, Z
1
, and Z
2
are as defined in the claims and pharmaceutically acceptable salts and esters thereof are disclosed. The compounds of formula (I) possess utility as androgen receptor antagonists (inhibitors) and/or cytochrome P450 monooxygenase 17α-hydroxylase/17,20-lyase (CYP17) inhibitors. The compounds are useful as medicaments in the treatment of cancer, particularly prostate cancer, and other androgen dependent conditions and diseases where androgen antagonism is desired.
Convergent Assembly of the Tricyclic Labdane Core Enables Synthesis of Diverse Forskolin‐like Molecules
作者:Paweł M. Szczepanik、Andrey A. Mikhaylov、Ondřej Hylse、Roman Kučera、Petra Daďová、Marek Nečas、Lukáš Kubala、Kamil Paruch、Jakub Švenda
DOI:10.1002/anie.202213183
日期:2023.1.2
large family of bioactive naturalproducts. Their often-complex structures present challenges to semisynthesis and denovo chemical synthesis in search of analogs with improved properties. To enable new modifications of the well-known tricyclic terpene forskolin, we have developed a distinct and potentially general synthetic scheme for the preparation of analogs of complex labdanes.