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470-42-8

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New cytotoxic bufadienolides from the biotransformation of resibufogenin by Mucor polymorphosporus
Resibufogenin is a cytotoxic steroid isolated from the Chinese drug ChanSu. The biotransformation of resibufogenin by Mucor polymorphosporus afforded 22 products, and 15 of them were new. The transformation reactions involved hydroxylations at C-1β, C-5, C-7α, C-7β, C-12α, C-12β and C-16α, as well as epimerization or dehydrogenation of 3-OH. Hydroxylations at C-12α, C-12β and C-16α were the major reactions, each giving products in >5% yields, whereas the other products were obtained in fairly low yields. Some of the products showed decreased but still potent cytotoxicities. This investigation provided a useful approach to prepare new bufadienolides and most of them were difficult to obtain by chemical means.
Ye, Min,Han, Jian,An, Dongge,Tu, Guangzhong,Guo, Dean
p. 8947 - 8955
(2007/10/03)

Synthesis of marinobufagin and marinobufotoxin from telecinobufagin.
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Kamano,Pettit
p. 768 - 768
(2007/10/07)

More Articles about upstream products of 470-42-8

465-39-4
resibufogenin

More Articles about downstream products of 470-42-8

Chemical Properties

Melting Point: 224-225 °C
Boiling Point: 589°Cat760mmHg
Flash Point:203°C
Density: 1.31g/cm³
Vapor Pressure: 0mmHg at 25°C
PKA: 14.77±0.70(Predicted)
PSA: 83.20000
LogP: 3.37320

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