(18β,20β)-3-(hydroxyimino)-11-oxoolean-12-en-29-oic acid diphenylmethyl ester

Base Information

Chemical Name:(18β,20β)-3-(hydroxyimino)-11-oxoolean-12-en-29-oic acid diphenylmethyl ester
CAS No.:1207976-38-2
Molecular Formula:C₄₃H₅₅NO₄
Molecular Weight:649.914
Hs Code.:

Synonyms:(18β,20β)-3-(hydroxyimino)-11-oxoolean-12-en-29-oic acid diphenylmethyl ester

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Chemical Property of (18β,20β)-3-(hydroxyimino)-11-oxoolean-12-en-29-oic acid diphenylmethyl ester

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Technology Process of (18β,20β)-3-(hydroxyimino)-11-oxoolean-12-en-29-oic acid diphenylmethyl ester

There total 4 articles about (18β,20β)-3-(hydroxyimino)-11-oxoolean-12-en-29-oic acid diphenylmethyl ester which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 98.0%

: 1207976-33-7
benzhydryl (2S,4aS,6aS,6bR,8aR,12aS,12bR,14bR)-2,4a,6a,6b,9,9,12a-heptamethyl-10,13-dioxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13,14b-icosahydropicene-2-carboxylate

: 1207976-38-2
(18β,20β)-3-(hydroxyimino)-11-oxoolean-12-en-29-oic acid diphenylmethyl ester

Guidance literature:: With pyridine; hydroxylamine hydrochloride; at 50 ℃; for 2.5h;
DOI:10.1016/j.bmc.2009.10.036

Reference yield:

: (2S,4aS,6aS,6bR,8aR,10S,12aS,12bR,14bR)-benzhydryl 10-hydroxy-2,4a,6a,6b,9,9,12a-heptamethyl-13-oxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13,14b-icosahydropicene-2-carboxylate

: 1207976-38-2
(18β,20β)-3-(hydroxyimino)-11-oxoolean-12-en-29-oic acid diphenylmethyl ester

Guidance literature:: Multi-step reaction with 2 steps

1: pyridinium chlorochromate / dichloromethane / 3.5 h / 40 - 45 °C

2: hydroxylamine hydrochloride; pyridine / 2.5 h / 50 °C

With pyridine; hydroxylamine hydrochloride; pyridinium chlorochromate; In dichloromethane;

Reference yield:

: 908093-98-1
diazodiphenylmethane

: 1207976-38-2
(18β,20β)-3-(hydroxyimino)-11-oxoolean-12-en-29-oic acid diphenylmethyl ester

Guidance literature:: Multi-step reaction with 3 steps

1: diethyl ether; methanol / 45 °C

2: pyridinium chlorochromate / dichloromethane / 3.5 h / 40 - 45 °C

3: hydroxylamine hydrochloride; pyridine / 2.5 h / 50 °C

With pyridine; hydroxylamine hydrochloride; pyridinium chlorochromate; In methanol; diethyl ether; dichloromethane;