Studies on steroidal plant-growth regulator 31: Effects of methanesulfonamide on the asymmetric osmylation of (22E)-steroidal unsaturated sidechains

Acta Chimica Sinica ›› 1995, Vol. 53 ›› Issue (5): 501-508. Previous Articles Next Articles

Original Articles

甾体植物生长调节剂合成研究31: 甲烷磺酰胺对(22E)-甾体不饱和侧链的锇催化的不对称双羟化反应的影响

黄良富;胡琦颖;周维善;夏立钧;毕茂华

中国科学院上海有机化学研究所

发布日期:1995-05-15

Studies on steroidal plant-growth regulator 31: Effects of methanesulfonamide on the asymmetric osmylation of (22E)-steroidal unsaturated sidechains

HUANG LIANGFU;HU QIYING;ZHOU WEISHAN;XIA LIJUN;BI MAOHUA

Published:1995-05-15

Abstract

The effects of methanesulfonamide on the asymmetric osmylation of (22E)-steriodal unsaturated sidechains have been studied with six examples. MeSO~2NH~2 can greatly enhance the rate of dihydroxylation in case there is another △^2^(^3^) double bond without effect of the enantioselectivity. However, the rate of reaction and stereoselectivity are decreased, the amounts of chiral ligand and osmium catalyst being diminished. Our improved method is very effective to construction of brassinosteroidal sidechains with DHQD-PHN and DHQD-NAP as chiral ligands.

Key words: CATALYSIS, PLANT GROWTH REGULATORS, OSMIUM

CLC Number:

TQ452
O629

Cite this article

HUANG LIANGFU;HU QIYING;ZHOU WEISHAN;XIA LIJUN;BI MAOHUA. Studies on steroidal plant-growth regulator 31: Effects of methanesulfonamide on the asymmetric osmylation of (22E)-steroidal unsaturated sidechains[J]. Acta Chimica Sinica, 1995, 53(5): 501-508.

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甾体植物生长调节剂合成研究31: 甲烷磺酰胺对(22E)-甾体不饱和侧链的锇催化的不对称双羟化反应的影响

Studies on steroidal plant-growth regulator 31: Effects of methanesulfonamide on the asymmetric osmylation of (22E)-steroidal unsaturated sidechains

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