471-95-4 Usage
Chemical Properties
Crystalline genin.
Uses
Bufotalin is a component of Bufo bufo gargarizans which acts as an anti-tumor agent.
Hazard
Deadly poison.
Check Digit Verification of cas no
The CAS Registry Mumber 471-95-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,7 and 1 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 471-95:
(5*4)+(4*7)+(3*1)+(2*9)+(1*5)=74
74 % 10 = 4
So 471-95-4 is a valid CAS Registry Number.
InChI:InChI=1/C26H36O6/c1-15(27)32-21-13-26(30)20-6-5-17-12-18(28)8-10-24(17,2)19(20)9-11-25(26,3)23(21)16-4-7-22(29)31-14-16/h4,7,14,17-21,23,28,30H,5-6,8-13H2,1-3H3
471-95-4Relevant articles and documents
Unified Total Synthesis of Five Bufadienolides
Hagiwara, Koichi,Inoue, Masayuki,Itoh, Hiroaki,Shimizu, Shinsuke
, (2020/11/13)
We report a unified total synthesis of five bufadienolides: bufalin (1), bufogenin B (2), bufotalin (3), vulgarobufotoxin (4), and 3-(N-succinyl argininyl) bufotalin (5). After the steroidal ABCD ring 8 was produced, the D ring was cross-coupled with a 2-pyrone moiety and stereoselectively epoxidized to generate 6. TMSOTf promoted a stereospecific 1,2-hydride shift from 6 to establish the β-oriented 2-pyrone of 19. Functional group manipulations from 19 furnished 1-5, which potently inhibited cancer cell growth.