PATENT CLAIM ANALYSIS

Application Number: 16327972
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-06
Patent Classification: ["552", "508000"]

Abstract:
The present invention discloses a process for the preparation of pregnadiene derivatives having formula I, their stereoisomer and intermediate thereof. Formula I wherein each substituent is independently, R 1  and R 2  is hydrogen or C 1 -C 8  straight, branched alkyl chain, saturated or unsaturated cycloalkyl; R 3  is hydrogen or wherein R 5  represents C 1 -C 8  straight, branched alkyl chain or cycloalkyl; R 4  is hydrogen or halogen; R 6  is hydrogen or halogen;

Claim (Index 1):
A novel process for the preparation of pregnadiene derivatives of formula I, their stereoisomer and intermediate thereof. wherein R 1  and R 2  is independently hydrogen or C1-C8 straight, branched alkyl chain, saturated or unsaturated cycloalkyl; R 3  is hydrogen or R 5  represents C1-C8 straight, branched alkyl chain or cycloalkyl; R 4  and R 6  is independently hydrogen or halogen; comprising the steps of: i. epoxidation of compound of formula II to obtain 9,11-oxido derivative of compound of formula III; ii. dihydroxylation and optional fluorination of compound of formula III to obtain compound of formula IV with a proviso when R 6  is F. iii. epoxide ring opening of compound of formula IV followed by acetalisation to obtain compound of formula V and optionally, debromination of compound of formula V with a proviso R 4  is Br to obtain compound of formula V when R4 is H iv. deacetylation of compound of Formula V to obtain compound of formula I

Metadata:
- Claim Count in Document: 17.0
- Percentile: 99.0
- Lexical Diversity: 1.76
- Patent Class: 552.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15543862', '12061499', '14354478', '12666423', '15548713']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6358237220058633
- 35 USC 102 Novelty (BERT): 0.5827443148840801
- Combined Prediction Score: 0.6305157812936851
- Mean Citation Score: 223.41237400000003
- Max Citation Score: 277.79678
- Similarity Product: 202.1711279003477

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test