A new chiral synthesis of bullfrog bile sterol 5β-ranol
作者:Don W. Harney、Theodore A. Macrides
DOI:10.1039/a607850h
日期:——
(24R)-27-Nor-5β-cholestane-3α,7α
,12α,24,26-pentol (5β-ranol) has been synthesised by the
Wittig olefinic coupling of a steroidal module and a side-chain module
followed by reduction and deprotection. The steroidal module is derived
from cholic acid by a one-carbon degradation of the side chain to
produce norcholic acid followed by the loss of a second carbon in an
iododecarboxylation and then synthesis of the triphenylphosphonium
iodide. The side-chain module is derived from
(S)-(-)-butane-1,2,4-triol by benzylidene
protection of the 2,4-diol followed by Swern oxidation to the aldehyde.
This general synthetic scheme could be used to produce a range of bile
sterols with the (24R)-hydroxy moiety which may have
significant hepatoprotective activity against liver damage induced by
free radicals or reactive metabolites.
BILE ALCOHOL AND DRUG CONTAINING THE SAME AS ACTIVE INGREDIENT
申请人:TSUMURA CO., LTD.
公开号:EP0489933A1
公开(公告)日:1992-06-17
A novel bile alcohol of general formula (I), having an efficacious physiological activity and being specified in the configurations of particularly the 20-, 24- and 25-positions; formula (I) wherein one of the groups R₁ and R₂ represents a group of formula (A) or (B) while the other represents -OH or -H; R₃ and R₄ represent each -CH₂OH, -CH₃ or -CH₂OSO₃Na; or alternatively R₂ and R₃ are combined together to represent -OCH₂-, R₂ and R₄ are combined together to represent -OCH₂-, or R₃ and R₄ are combined together to represent -CH₂OCH₂-; provided that R₃ and R₄ do not represent -CH₃ at the same time and that R₁ represents -OH or -H and R₂ represents the group of formula (A) or (B) when R₃ and R₄ represent -CH₂OH at the same time. A drug containing the bile alcohol, including those wherein R₃ and R₄ in the above formula (I) represent each -H, -CH₂OH, -CH₃ or -CH₂OSO₃Na (except for the case where both R₃ and R₄ represent -H at the same time), and 3α 7α, 12α, 24-tetrahydroxy-5α- or -5β-cholane is efficacious as a cerebral function protective agent, cholagogue, cell activator, microcirculation improver, antiarteriosclerotic agent, antihyperlipemia drug, hepatic function improver, anti-inflammatory drug, antithrombotic drug and hypertensive.
METHODS, COMPOSITIONS, AND KITS FOR THE TREATMENT OF CANCER
申请人:Haggerty Timothy J.
公开号:US20140335050A1
公开(公告)日:2014-11-13
The invention features methods, compositions, and kits for the administration of an HSP90 inhibitor, OBAA, flunarizine, aphidicolin, damnacanthal, dantrolene, or an analog thereof, alone, or in combination with, e.g., a TAA, an antigen-binding scaffold (e.g., an antibody, a soluble T cell receptor, or a chimeric receptor) specific for a TAA, a cell (e.g., a white blood cell that targets a cancer cell), and/or an IFN-β receptor agonist or an IFN-γ receptor agonist, for the treatment of cancer.
Kuramoto, Taiju; Noma, Yukio; Hoshita, Takahiko, Chemical and pharmaceutical bulletin, 1983, vol. 31, # 4, p. 1330 - 1334