13040-46-5 Usage
Uses
Paulownine portrays anti-inflammatory effects by suppressing expression of iNOS and TNF.
Check Digit Verification of cas no
The CAS Registry Mumber 13040-46-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,0,4 and 0 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 13040-46:
(7*1)+(6*3)+(5*0)+(4*4)+(3*0)+(2*4)+(1*6)=55
55 % 10 = 5
So 13040-46-5 is a valid CAS Registry Number.
InChI:InChI=1/C20H18O7/c21-20-8-23-18(11-1-3-14-16(5-11)26-9-24-14)13(20)7-22-19(20)12-2-4-15-17(6-12)27-10-25-15/h1-6,13,18-19,21H,7-10H2/t13-,18-,19-,20-/m1/s1
13040-46-5Relevant articles and documents
Improved procedure for the enantiometric synthesis of 1-hydroxy/acetoxy-2,6-diaryl-3,7-dioxabicyclo[3.3.0]octane lignans: Total syntheses of (+)-paulownin, (+)-phrymarin I and (+)-phrymarin II
Ishibashi, Fumito,Hayashita, Mami,Okazaki, Momotoshi,Shuto, Yoshihiro
, p. 29 - 34 (2007/10/03)
Short enantiomeric syntheses of the 1-hydroxy/ acetoxy-3,7-dioxabicyclo[3.3.0]octane lignans, (+)-paulownin, and (+)-phrymarin I and II, were accomplished by starting from the chiral synthon, (R)-(+)-3-hydroxybutanolide, and employing photocyclization as the key step.
