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133129-56-3

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133129-56-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133129-56-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,1,2 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 133129-56:
(8*1)+(7*3)+(6*3)+(5*1)+(4*2)+(3*9)+(2*5)+(1*6)=103
103 % 10 = 3
So 133129-56-3 is a valid CAS Registry Number.

133129-56-3Relevant articles and documents

Studies toward the total synthesis of popolohuanone E: enantioselective synthesis of 8-O-methylpopolohuanone E.

Katoh,Nakatani,Shikita,Sampe,Ishiwata,Ohmori,Nakamura,Terashima

, p. 2701 - 2704 (2001)

[structure: see text]. 8-O-methylpopolohuanone E (2) was synthesized in a highly convergent manner starting from the cis-fused decalin derivative accessible from the (-)-Wieland-Miescher ketone analogue. The synthetic method features a biogenetic-type annulation of the phenolic and quinone segments to regioselectively construct the central tricyclic ring system as the key step.

Design, synthesis, and evaluation of A-ring-modified lamellarin N analogues as noncovalent inhibitors of the EGFR T790M/L858R mutant

Fukuda, Tsutomu,Umeki, Teppei,Tokushima, Keiji,Xiang, Gao,Yoshida, Yuki,Ishibashi, Fumito,Oku, Yusuke,Nishiya, Naoyuki,Uehara, Yoshimasa,Iwao, Masatomo

supporting information, p. 6563 - 6580 (2017/11/17)

A series of A-ring-modified lamellarin N analogues were designed, synthesized, and evaluated as potential noncovalent inhibitors of the EGFR T790M/L858R mutant, a causal factor in the drug-resistant non-small cell lung cancer. Several water-soluble ammonium- or guanidinium-tethered analogues exhibited good kinase inhibitory activities. The most promising analogue, 14f, displayed an excellent inhibitory profile against the T790M/L858R mutant [IC50 (WT) = 31.8 nM; IC50 (T790M/L858R) = 8.9 nM]. The effects of A-ring-substituents on activity were rationalized by docking studies.

Chemistry of renieramycins. Part 12: An improved total synthesis of (±)-renieramycin G

Yokoya, Masashi,Shinada-Fujino, Kimiko,Yoshida, Saiko,Mimura, Masahiro,Takada, Hiroki,Saito, Naoki

experimental part, p. 4166 - 4181 (2012/07/28)

An improved total synthesis of (±)-renieramycin G (1g) from readily available 2-hydroxy-3-methyl-4,5-dimethoxybenzaldehyde (7) in 21 steps (6.3% overall yield) is described. The synthesis features the concise construction of a pentacyclic framework using the stereoselective Pictet-Spengler type cyclization reaction of lactam (25) with ethyl diethoxyacetate, followed by the base-catalyzed epimerization of the C-1 stereo center of aldehyde (30a). The results of cytotoxicity studies are also presented.

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